UNITED STATES
                       SECURITIES AND EXCHANGE COMMISSION
                            Washington, D.C.  20549

                                    Form 13F

                              Form 13F COVER PAGE

Report for the Calendar Year or Quarter Ended: December 31, 2005

Check here if Amendment [  ]; Amendment Number:
This Amendment (Check only one.): [  ] is a restatement.
                                  [  ] adds new holdings entries.

Institutional Investment Manager Filing this Report:

Name:    UNITRIN, INC.
Address: One East Wacker Drive, 10th Floor
         Chicago, IL  60601

13F File Number:  28-02715

The institutional investment manager filing this report and the person by whom
it is signed hereby represent that the person signing the report is authorized
to submit it, that all information contained herein is true, correct and
complete, and that it is understood that all required items, statements,
schedules, lists, and tables, are considered integral parts of this form.

Person Signing this Report on Behalf of Reporting Manager:

Name:      Richard Roeske
Title:     Vice President
Phone:     312-661-4600

Signature, Place, and Date of Signing:

     /s/ Richard Roeske     Chicago, IL     February 13, 2006

Report Type (Check only one.):

[ X]         13F HOLDINGS REPORT.

[  ]         13F NOTICE.

[  ]         13F COMBINATION REPORT.



                              FORM 13F SUMMARY PAGE

Report Summary:

Number of Other Included Managers:         2

Form13F Information Table Entry Total:     139

Form13F Information Table Value Total:     $1,209,889 (thousands)

List of Other Included Managers:

Provide a numbered list of the name(s) and Form 13F file number(s) of all
institutional managers with respect to which this report is filed, other
than the manager filing this report.

No.  13F File Number               Name

01   28-00121                      TRINITY UNIVERSAL INSURANCE COMPANY
02   28-00117                      UNITED INSURANCE COMPANY OF AMERICA



                                    
                                                     FORM 13F INFORMATION TABLE
                                                             VALUE  SHARES/ SH/ PUT/ INVSTMT  OTHER            VOTING AUTHORITY
NAME OF ISSUER                 TITLE OF CLASS   CUSIP     (x$1000)  PRN AMT PRN CALL DSCRETN MANAGERS         SOLE   SHARED     NONE
------------------------------ ---------------- --------- -------- -------- --- ---- ------- ------------ -------- -------- --------
ABBOTT LABS                    COM              002824100      394    10000 SH       OTHER                       0    10000        0
ABBOTT LABS                    COM              002824100     2366    60000 SH       OTHER   01                  0    60000        0
ALTRIA GROUP INC               COM              02209S103     2615    35000 SH       OTHER                       0    35000        0
ALTRIA GROUP INC               COM              02209S103    14197   190000 SH       OTHER   01                  0   190000        0
AMERICAN EXPRESS CO            COM              025816109      386     7500 SH       OTHER                       0     7500        0
AMERICAN EXPRESS CO            COM              025816109     2583    50200 SH       OTHER   01                  0    50200        0
AMERICAN INTL GROUP INC        COM              026874107      580     8500 SH       OTHER                       0     8500        0
AMERICAN INTL GROUP INC        COM              026874107     2388    35000 SH       OTHER   01                  0    35000        0
AMERIPRISE FINL INC            COM              03076C106      164     4000 SH       OTHER                       0     4000        0
AMERIPRISE FINL INC            COM              03076C106     1954    47640 SH       OTHER   01                  0    47640        0
ANHEUSER BUSCH COS INC         COM              035229103      301     7000 SH       OTHER                       0     7000        0
ANHEUSER BUSCH COS INC         COM              035229103     1933    45000 SH       OTHER   01                  0    45000        0
ARAMARK CORP                   CL B             038521100     1528    55000 SH       OTHER   01                  0    55000        0
AUTOMATIC DATA PROCESSING IN   COM              053015103      275     6000 SH       OTHER                       0     6000        0
AUTOMATIC DATA PROCESSING IN   COM              053015103     1377    30000 SH       OTHER   01                  0    30000        0
AUTONATION INC                 COM              05329W102     1147    52800 SH       OTHER   01                  0    52800        0
BAKER HUGHES INC               COM              057224107    48685   801000 SH       DEFINED 01             801000        0        0
BANK OF AMERICA CORPORATION    COM              060505104      531    11500 SH       OTHER                       0    11500        0
BANK OF AMERICA CORPORATION    COM              060505104     2769    60000 SH       OTHER   01                  0    60000        0
BEARINGPOINT INC               COM              074002106     2682   341200 SH       OTHER   01                  0   341200        0
BELO CORP                      COM SER A        080555105     1460    68200 SH       OTHER   01                  0    68200        0
BLACK & DECKER CORP            COM              091797100     2209    25400 SH       OTHER   01                  0    25400        0
BP PLC                         SPONSORED ADR    055622104      867    13500 SH       OTHER                       0    13500        0
BP PLC                         SPONSORED ADR    055622104     4495    70000 SH       OTHER   01                  0    70000        0
BRUNSWICK CORP                 COM              117043109     3277    80600 SH       OTHER   01                  0    80600        0
CABLEVISION SYS CORP           CL A NY CABLVS   12686C109     1474    62800 SH       OTHER   01                  0    62800        0
CENDANT CORP                   COM              151313103      531    30800 SH       OTHER   01                  0    30800        0
CHEVRON CORP NEW               COM              166764100      856    15080 SH       OTHER                       0    15080        0
CHEVRON CORP NEW               COM              166764100     4508    79400 SH       OTHER   01                  0    79400        0
CITIGROUP INC                  COM              172967101      560    11531 SH       DEFINED                 11531        0        0
CITIGROUP INC                  COM              172967101     3461    71309 SH       DEFINED 01              71309        0        0
CITIGROUP INC                  COM              172967101     1301    26800 SH       OTHER                       0    26800        0
CITIGROUP INC                  COM              172967101     6333   130500 SH       OTHER   01                  0   130500        0
COCA COLA CO                   COM              191216100      746    18500 SH       OTHER                       0    18500        0
COCA COLA CO                   COM              191216100     4333   107500 SH       OTHER   01                  0   107500        0
COLGATE PALMOLIVE CO           COM              194162103      384     7000 SH       OTHER                       0     7000        0
COLGATE PALMOLIVE CO           COM              194162103     1563    28500 SH       OTHER   01                  0    28500        0
CONOCOPHILLIPS                 COM              20825C104      727    12500 SH       OTHER                       0    12500        0
CONOCOPHILLIPS                 COM              20825C104     3782    65000 SH       OTHER   01                  0    65000        0
CONSECO INC                    COM NEW          208464883     2813   121400 SH       OTHER   01                  0   121400        0
DISCOVERY HOLDING CO           CL A COM         25468Y107     2142   141400 SH       OTHER   01                  0   141400        0
DONNELLEY R R & SONS CO        COM              257867101     2066    60400 SH       OTHER   01                  0    60400        0
ECHOSTAR COMMUNICATIONS NEW    CL A             278762109     1919    70600 SH       OTHER   01                  0    70600        0
EMERSON ELEC CO                COM              291011104      426     5700 SH       OTHER                       0     5700        0
EMERSON ELEC CO                COM              291011104     2144    28700 SH       OTHER   01                  0    28700        0
EQUIFAX INC                    COM              294429105     2715    71400 SH       OTHER   01                  0    71400        0
EXXON MOBIL CORP               COM              30231G102     1988    35400 SH       OTHER                       0    35400        0
EXXON MOBIL CORP               COM              30231G102    11234   200000 SH       OTHER   01                  0   200000        0
FEDERAL HOME LN MTG CORP       COM              313400301      229     3500 SH       OTHER                       0     3500        0
FEDERAL HOME LN MTG CORP       COM              313400301     1372    21000 SH       OTHER   01                  0    21000        0
FORD MTR CO CAP TR II          PFD TR CV6.5%    345395206      276    10000 SH       DEFINED 02              10000        0        0
FORTUNE BRANDS INC             COM              349631101     2060    26400 SH       OTHER   01                  0    26400        0
GAP INC DEL                    COM              364760108     2187   124000 SH       OTHER   01                  0   124000        0
GENERAL ELECTRIC CO            COM              369604103     1682    48000 SH       DEFINED                 48000        0        0
GENERAL ELECTRIC CO            COM              369604103     1402    40000 SH       OTHER                       0    40000        0
GENERAL ELECTRIC CO            COM              369604103     5994   171000 SH       OTHER   01                  0   171000        0
GOLDMAN SACHS GROUP INC        COM              38141G104      639     5000 SH       SOLE                     5000        0        0
HARLEY DAVIDSON INC            COM              412822108     1864    36200 SH       OTHER   01                  0    36200        0
HARTFORD FINL SVCS GROUP INC   COM              416515104    19265   224300 SH       DEFINED 02             224300        0        0
HOME DEPOT INC                 COM              437076102      283     7000 SH       OTHER                       0     7000        0
HOME DEPOT INC                 COM              437076102     1417    35000 SH       OTHER   01                  0    35000        0
HSBC HLDGS PLC                 SPON ADR NEW     404280406      523     6500 SH       OTHER                       0     6500        0
HSBC HLDGS PLC                 SPON ADR NEW     404280406     3058    38000 SH       OTHER   01                  0    38000        0
INTEL CORP                     COM              458140100      784    31400 SH       OTHER                       0    31400        0
INTEL CORP                     COM              458140100     4106   164500 SH       OTHER   01                  0   164500        0
JOHNSON & JOHNSON              COM              478160104      781    13000 SH       OTHER                       0    13000        0
JOHNSON & JOHNSON              COM              478160104     4508    75000 SH       OTHER   01                  0    75000        0
JP MORGAN CHASE & CO           COM              46625H100      635    16000 SH       OTHER                       0    16000        0
JP MORGAN CHASE & CO           COM              46625H100     3326    83800 SH       OTHER   01                  0    83800        0
KNIGHT RIDDER INC              COM              499040103     1139    18000 SH       OTHER   01                  0    18000        0
KRAFT FOODS INC                CL A             50075N104      873    31000 SH       DEFINED 01              31000        0        0
LABORATORY CORP AMER HLDGS     COM NEW          50540R409     2316    43000 SH       OTHER   01                  0    43000        0
LAUDER ESTEE COS INC           CL A             518439104      167     5000 SH       OTHER                       0     5000        0
LAUDER ESTEE COS INC           CL A             518439104     2916    87100 SH       OTHER   01                  0    87100        0
LENNAR CORP                    CL A             526057104     1281    21000 SH       OTHER   01                  0    21000        0
LIBERTY GLOBAL INC             COM SER C        530555309     1444    68136 SH       OTHER   01                  0    68136        0
LIMITED BRANDS INC             COM              532716107     1513    67700 SH       OTHER   01                  0    67700        0
LIZ CLAIBORNE INC              COM              539320101     1884    52600 SH       OTHER   01                  0    52600        0
MASCO CORP                     COM              574599106     1932    64000 SH       OTHER   01                  0    64000        0
MATTEL INC                     COM              577081102     1218    77000 SH       OTHER   01                  0    77000        0
MBIA INC                       COM              55262C100     1925    32000 SH       OTHER   01                  0    32000        0
MCDONALDS CORP                 COM              580135101      506    15000 SH       OTHER                       0    15000        0
MCDONALDS CORP                 COM              580135101     1855    55000 SH       OTHER   01                  0    55000        0
MCGRAW HILL COS INC            COM              580645109     1033    20000 SH       OTHER                       0    20000        0
MCGRAW HILL COS INC            COM              580645109     3614    70000 SH       OTHER   01                  0    70000        0
MCI INC                        COM              552691107      290    14676 SH       DEFINED 01              14676        0        0
MEDIMMUNE INC                  COM              584699102     2697    77000 SH       OTHER   01                  0    77000        0
MERRILL LYNCH & CO INC         COM              590188108      339     5000 SH       OTHER                       0     5000        0
MERRILL LYNCH & CO INC         COM              590188108     1849    27300 SH       OTHER   01                  0    27300        0
MGIC INVT CORP WIS             COM              552848103     2264    34400 SH       OTHER   01                  0    34400        0
MICROSOFT CORP                 COM              594918104      539    20600 SH       OTHER                       0    20600        0
MICROSOFT CORP                 COM              594918104     2905   111100 SH       OTHER   01                  0   111100        0
NATIONAL SEMICONDUCTOR CORP    COM              637640103     1585    61000 SH       OTHER   01                  0    61000        0
NEWS CORP                      CL A             65248E104      246    15800 SH       OTHER                       0    15800        0
NEWS CORP                      CL A             65248E104     1658   106600 SH       OTHER   01                  0   106600        0
NORTHROP GRUMMAN CORP          COM              666807102   364730  6067711 SH       DEFINED 01            6067711        0        0
NORTHROP GRUMMAN CORP          COM              666807102    95983  1596789 SH       SOLE                  1596789        0        0
OCCIDENTAL PETE CORP DEL       COM              674599105      288     3600 SH       OTHER                       0     3600        0
OCCIDENTAL PETE CORP DEL       COM              674599105     1598    20000 SH       OTHER   01                  0    20000        0
OMNICARE INC                   COM              681904108     1511    26400 SH       OTHER   01                  0    26400        0
PEPSI BOTTLING GROUP INC       COM              713409100     1339    46800 SH       OTHER   01                  0    46800        0
PEPSICO INC                    COM              713448108      892    15100 SH       OTHER                       0    15100        0
PEPSICO INC                    COM              713448108     4136    70000 SH       OTHER   01                  0    70000        0
PRAXAIR INC                    COM              74005P104      238     4500 SH       OTHER                       0     4500        0
PRAXAIR INC                    COM              74005P104     1059    20000 SH       OTHER   01                  0    20000        0
PROCTER & GAMBLE CO            COM              742718109      955    16500 SH       OTHER                       0    16500        0
PROCTER & GAMBLE CO            COM              742718109     5313    91800 SH       OTHER   01                  0    91800        0
ROYAL DUTCH SHELL PLC          SPONS ADR A      780259206      246     4000 SH       OTHER                       0     4000        0
ROYAL DUTCH SHELL PLC          SPONS ADR A      780259206     2091    34000 SH       OTHER   01                  0    34000        0
SNAP ON INC                    COM              833034101     3839   102200 SH       OTHER   01                  0   102200        0
SOVEREIGN BANCORP INC          COM              845905108     2962   137000 SH       OTHER   01                  0   137000        0
SUN MICROSYSTEMS INC           COM              866810104      852   203300 SH       OTHER   01                  0   203300        0
SUNTRUST BKS INC               COM              867914103      473     6500 SH       OTHER                       0     6500        0
SUNTRUST BKS INC               COM              867914103     2183    30000 SH       OTHER   01                  0    30000        0
SYSCO CORP                     COM              871829107      171     5500 SH       OTHER                       0     5500        0
SYSCO CORP                     COM              871829107      932    30000 SH       OTHER   01                  0    30000        0
TARGET CORP                    COM              87612E106      550    10000 SH       OTHER                       0    10000        0
TARGET CORP                    COM              87612E106     2474    45000 SH       OTHER   01                  0    45000        0
TIFFANY & CO NEW               COM              886547108     1731    45200 SH       OTHER   01                  0    45200        0
TOTAL S A                      SPONSORED ADR    89151E109      506     4000 SH       OTHER                       0     4000        0
TOTAL S A                      SPONSORED ADR    89151E109     2528    20000 SH       OTHER   01                  0    20000        0
TRIBUNE CO NEW                 COM              896047107     2451    81000 SH       OTHER   01                  0    81000        0
UNITED PARCEL SERVICE INC      CL B             911312106      301     4000 SH       OTHER                       0     4000        0
UNITED PARCEL SERVICE INC      CL B             911312106     1879    25000 SH       OTHER   01                  0    25000        0
UNITEDHEALTH GROUP INC         COM              91324P102      249     4000 SH       OTHER                       0     4000        0
UNITEDHEALTH GROUP INC         COM              91324P102     1243    20000 SH       OTHER   01                  0    20000        0
UNIVERSAL AMERN FINL CORP      COM              913377107      754    50000 SH       DEFINED                 50000        0        0
UNOVA INC                      COM              91529B106   427832 12657764 SH       DEFINED 01           12657764        0        0
VIACOM INC                     CL B             925524308      652    20000 SH       OTHER   01                  0    20000        0
WAL MART STORES INC            COM              931142103      562    12000 SH       OTHER                       0    12000        0
WAL MART STORES INC            COM              931142103     3089    66000 SH       OTHER   01                  0    66000        0
WALGREEN CO                    COM              931422109      885    20000 SH       OTHER                       0    20000        0
WALGREEN CO                    COM              931422109     3983    90000 SH       OTHER   01                  0    90000        0
WASHINGTON MUT INC             COM              939322103     3793    87200 SH       OTHER   01                  0    87200        0
WATSON PHARMACEUTICALS INC     COM              942683103     1196    36800 SH       OTHER   01                  0    36800        0
WHOLE FOODS MKT INC            COM              966837106      186     2400 SH       OTHER                       0     2400        0
WHOLE FOODS MKT INC            COM              966837106      929    12000 SH       OTHER   01                  0    12000        0
WILMINGTON TRUST CORP          COM              971807102     1759    45200 SH       OTHER   01                  0    45200        0
XEROX CORP                     COM              984121103     3018   206000 SH       OTHER   01                  0   206000        0