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, 2006

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 06, 2007

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:         1

Form13F Information Table Entry Total:     122

Form13F Information Table Value Total:     $1,270,026 (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

1    28-00121                      TRINITY UNIVERSAL INSURANCE COMPANY



                                    
                                                     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     3410    70000 SH        OTHER   1                  0    70000        0
ALTRIA GROUP INC               COM              02209S103    19310   225000 SH        OTHER   1                  0   225000        0
AMERICAN EXPRESS CO            COM              025816109     3501    57700 SH        OTHER   1                  0    57700        0
AMERICAN INTL GROUP INC        COM              026874107     3117    43500 SH        OTHER   1                  0    43500        0
AMERIPRISE FINL INC            COM              03076C106     1390    25500 SH        OTHER   1                  0    25500        0
AMERIPRISE FINL INC            COM              03076C106     1365    25040 SH        OTHER   1                  0    25040        0
ANHEUSER BUSCH COS INC         COM              035229103     2558    52000 SH        OTHER   1                  0    52000        0
ARCHSTONE SMITH TR             COM              039583109     2072    35600 SH        OTHER   1                  0    35600        0
AUTOMATIC DATA PROCESSING IN   COM              053015103     2463    50000 SH        OTHER   1                  0    50000        0
AVALONBAY CMNTYS INC           COM              053484101     2081    16000 SH        OTHER   1                  0    16000        0
BAKER HUGHES INC               COM              057224107    41130   550900 SH        DEFINED 1             550900        0        0
BANK OF AMERICA CORPORATION    COM              060505104     3924    73500 SH        OTHER   1                  0    73500        0
BAUSCH & LOMB INC              COM              071707103     2978    57200 SH        OTHER   1                  0    57200        0
BEARINGPOINT INC               COM              074002106     2526   321000 SH        OTHER   1                  0   321000        0
BELO CORP                      COM SER A        080555105     1253    68200 SH        OTHER   1                  0    68200        0
BLACK & DECKER CORP            COM              091797100     1343    16800 SH        OTHER   1                  0    16800        0
BOSTON PROPERTIES INC          COM              101121101     2640    23600 SH        OTHER   1                  0    23600        0
BP PLC                         SPONSORED ADR    055622104     3355    50000 SH        OTHER   1                  0    50000        0
BRUNSWICK CORP                 COM              117043109     2571    80600 SH        OTHER   1                  0    80600        0
C D W CORP                     COM              12512N105     2081    29600 SH        OTHER   1                  0    29600        0
CAPITAL ONE FINL CORP          COM              14040H105     2305    30000 SH        OTHER   1                  0    30000        0
CATERPILLAR INC DEL            COM              149123101     2453    40000 SH        OTHER   1                  0    40000        0
CBS CORP NEW                   CL B             124857202      312    10000 SH        OTHER   1                  0    10000        0
CHEVRON CORP NEW               COM              166764100     6947    94480 SH        OTHER   1                  0    94480        0
CITIGROUP INC                  COM              172967101     4614    82840 SH        DEFINED 1              82840        0        0
CITIGROUP INC                  COM              172967101     8762   157300 SH        OTHER   1                  0   157300        0
COCA COLA CO                   COM              191216100     6152   127500 SH        OTHER   1                  0   127500        0
CONOCOPHILLIPS                 COM              20825C104     6691    93000 SH        OTHER   1                  0    93000        0
CONSECO INC                    COM NEW          208464883     3249   162600 SH        OTHER   1                  0   162600        0
CORPORATE OFFICE PPTYS TR      SH BEN INT       22002T108     2175    43100 SH        OTHER   1                  0    43100        0
DISCOVERY HOLDING CO           CL A COM         25468Y107     4335   269400 SH        OTHER   1                  0   269400        0
DONNELLEY R R & SONS CO        COM              257867101     2147    60400 SH        OTHER   1                  0    60400        0
ECHOSTAR COMMUNICATIONS NEW    CL A             278762109      943    24800 SH        OTHER   1                  0    24800        0
EMERSON ELEC CO                COM              291011104     3033    68800 SH        OTHER   1                  0    68800        0
ESSEX PPTY TR INC              COM              297178105     2016    15600 SH        OTHER   1                  0    15600        0
EXPEDIA INC DEL                COM              30212P105     1781    84900 SH        OTHER   1                  0    84900        0
EXXON MOBIL CORP               COM              30231G102    18039   235400 SH        OTHER   1                  0   235400        0
FEDERAL REALTY INVT TR         SH BEN INT NEW   313747206     2151    25300 SH        OTHER   1                  0    25300        0
FORD MTR CO CAP TR II          PFD TR CV6.5%    345395206      342    10000 SH        DEFINED                10000        0        0
FORTUNE BRANDS INC             COM              349631101     2075    24300 SH        OTHER   1                  0    24300        0
GAP INC DEL                    COM              364760108     1544    79200 SH        OTHER   1                  0    79200        0
GENERAL ELECTRIC CO            COM              369604103     1786    48000 SH        DEFINED 1              48000        0        0
GENERAL ELECTRIC CO            COM              369604103     8372   225000 SH        OTHER   1                  0   225000        0
GOLDMAN SACHS GROUP INC        COM              38141G104      997     5000 SH        SOLE                    5000        0        0
HALLIBURTON CO                 COM              406216101     2329    75000 SH        OTHER   1                  0    75000        0
HARLEY DAVIDSON INC            COM              412822108     2199    31200 SH        OTHER   1                  0    31200        0
HARTFORD FINL SVCS GROUP INC   COM              416515104    19996   214300 SH        DEFINED               214300        0        0
HILTON HOTELS CORP             COM              432848109     2269    65000 SH        OTHER   1                  0    65000        0
HOME DEPOT INC                 COM              437076102     2610    65000 SH        OTHER   1                  0    65000        0
HSBC HLDGS PLC                 SPON ADR NEW     404280406     4124    45000 SH        OTHER   1                  0    45000        0
IDEARC INC                     COM              451663108       12      421 SH        DEFINED 1                421        0        0
IDEARC INC                     COM              451663108      477    17000 SH        OTHER   1                  0    17000        0
INTEL CORP                     COM              458140100     4048   199900 SH        OTHER   1                  0   199900        0
INTERMEC INC                   COM              458786100   307204 12657764 SH        DEFINED 1           12657764        0        0
ISHARES TR                     MSCI EAFE IDX    464287465    55750   761400 SH        DEFINED 1             761400        0        0
JOHNSON & JOHNSON              COM              478160104     5810    88000 SH        OTHER   1                  0    88000        0
JP MORGAN CHASE & CO           COM              46625H100     4820    99800 SH        OTHER   1                  0    99800        0
KINETIC CONCEPTS INC           COM NEW          49460W208     2511    63500 SH        OTHER   1                  0    63500        0
KRAFT FOODS INC                CL A             50075N104     1107    31000 SH        DEFINED 1              31000        0        0
LABORATORY CORP AMER HLDGS     COM NEW          50540R409     1543    21000 SH        OTHER   1                  0    21000        0
LAUDER ESTEE COS INC           CL A             518439104      706    17300 SH        OTHER   1                  0    17300        0
LAUDER ESTEE COS INC           CL A             518439104      980    24000 SH        OTHER   1                  0    24000        0
LENNAR CORP                    CL A             526057104     1102    21000 SH        OTHER   1                  0    21000        0
LIBERTY GLOBAL INC             COM SER C        530555309     2600    92870 SH        OTHER   1                  0    92870        0
LIMITED BRANDS INC             COM              532716107     1959    67700 SH        OTHER   1                  0    67700        0
LIZ CLAIBORNE INC              COM              539320101     2260    52000 SH        OTHER   1                  0    52000        0
MACK CALI RLTY CORP            COM              554489104     1964    38500 SH        OTHER   1                  0    38500        0
MASCO CORP                     COM              574599106     2007    67200 SH        OTHER   1                  0    67200        0
MBIA INC                       COM              55262C100     2338    32000 SH        OTHER   1                  0    32000        0
MCDONALDS CORP                 COM              580135101     3103    70000 SH        OTHER   1                  0    70000        0
MCGRAW HILL COS INC            COM              580645109     6122    90000 SH        OTHER   1                  0    90000        0
MEDIMMUNE INC                  COM              584699102     2606    80500 SH        OTHER   1                  0    80500        0
MERRILL LYNCH & CO INC         COM              590188108     4190    45000 SH        OTHER   1                  0    45000        0
MGIC INVT CORP WIS             COM              552848103     2214    35400 SH        OTHER   1                  0    35400        0
MICROSOFT CORP                 COM              594918104     3933   131700 SH        OTHER   1                  0   131700        0
MOLSON COORS BREWING CO        CL B             60871R209     1590    20800 SH        OTHER   1                  0    20800        0
MUELLER WTR PRODS INC          COM SER B        624758207      913    61305 SH        OTHER   1                  0    61305        0
NATIONAL SEMICONDUCTOR CORP    COM              637640103     1995    87900 SH        OTHER   1                  0    87900        0
NEWS CORP                      CL A             65248E104     2737   127400 SH        OTHER   1                  0   127400        0
NORTHROP GRUMMAN CORP          COM              666807102   406235  6000511 SH        DEFINED 1            6000511        0        0
NORTHROP GRUMMAN CORP          COM              666807102    94028  1388889 SH        SOLE                 1388889        0        0
OCCIDENTAL PETE CORP DEL       COM              674599105     2393    49000 SH        OTHER   1                  0    49000        0
OMNICARE INC                   COM              681904108     2376    61500 SH        OTHER   1                  0    61500        0
PARTNERRE LTD                  COM              G6852T105     1939    27300 SH        OTHER   1                  0    27300        0
PEMCO AVIATION INC             COM              706444106       28     3600 SH        DEFINED 1               3600        0        0
PENTAIR INC                    COM              709631105     1030    32800 SH        OTHER   1                  0    32800        0
PEPSICO INC                    COM              713448108     5323    85100 SH        OTHER   1                  0    85100        0
POST PPTYS INC                 COM              737464107     1805    39500 SH        OTHER   1                  0    39500        0
PRAXAIR INC                    COM              74005P104     2017    34000 SH        OTHER   1                  0    34000        0
PROCTER & GAMBLE CO            COM              742718109     7025   109300 SH        OTHER   1                  0   109300        0
PROLOGIS                       SH BEN INT       743410102     2090    34400 SH        OTHER   1                  0    34400        0
PUBLIC STORAGE INC             COM              74460D109     2213    22700 SH        OTHER   1                  0    22700        0
QUALCOMM INC                   COM              747525103      831    22000 SH        OTHER   1                  0    22000        0
ROYAL DUTCH SHELL PLC          SPONS ADR A      780259206     2690    38000 SH        OTHER   1                  0    38000        0
SAFECO CORP                    COM              786429100     1945    31100 SH        OTHER   1                  0    31100        0
SIMON PPTY GROUP INC NEW       COM              828806109     2157    21300 SH        OTHER   1                  0    21300        0
SNAP ON INC                    COM              833034101     3340    70100 SH        OTHER   1                  0    70100        0
SOVEREIGN BANCORP INC          COM              845905108     3652   143850 SH        OTHER   1                  0   143850        0
SPRINT NEXTEL CORP             COM FON          852061100      529    28000 SH        OTHER   1                  0    28000        0
SUN MICROSYSTEMS INC           COM              866810104     2777   512400 SH        OTHER   1                  0   512400        0
SUNTRUST BKS INC               COM              867914103     3082    36500 SH        OTHER   1                  0    36500        0
SYSCO CORP                     COM              871829107     2022    55000 SH        OTHER   1                  0    55000        0
TARGET CORP                    COM              87612E106     3138    55000 SH        OTHER   1                  0    55000        0
TAUBMAN CTRS INC               COM              876664103     2162    42500 SH        OTHER   1                  0    42500        0
TENET HEALTHCARE CORP          COM              88033G100     3355   481400 SH        OTHER   1                  0   481400        0
TIFFANY & CO NEW               COM              886547108     1621    41300 SH        OTHER   1                  0    41300        0
TOTAL S A                      SPONSORED ADR    89151E109     3452    48000 SH        OTHER   1                  0    48000        0
TRIBUNE CO NEW                 COM              896047107     2493    81000 SH        OTHER   1                  0    81000        0
UNITED PARCEL SERVICE INC      CL B             911312106     2849    38000 SH        OTHER   1                  0    38000        0
UNITED TECHNOLOGIES CORP       COM              913017109     2501    40000 SH        OTHER   1                  0    40000        0
UNITEDHEALTH GROUP INC         COM              91324P102     1692    31500 SH        OTHER   1                  0    31500        0
UNIVERSAL AMERN FINL CORP      COM              913377107      932    50000 SH        DEFINED                50000        0        0
VANGUARD INTL EQUITY INDEX F   EMR MKT ETF      922042858    11934   154200 SH        DEFINED 1             154200        0        0
VERIZON COMMUNICATIONS         COM              92343V104      314     8428 SH        DEFINED 1               8428        0        0
VIACOM INC NEW                 CL B             92553P201      410    10000 SH        OTHER   1                  0    10000        0
WAL MART STORES INC            COM              931142103     3602    78000 SH        OTHER   1                  0    78000        0
WALGREEN CO                    COM              931422109     5048   110000 SH        OTHER   1                  0   110000        0
WALTER INDS INC                COM              93317Q105     1004    37100 SH        OTHER   1                  0    37100        0
WASHINGTON MUT INC             COM              939322103     3967    87200 SH        OTHER   1                  0    87200        0
WHOLE FOODS MKT INC            COM              966837106     1408    30000 SH        OTHER   1                  0    30000        0
XEROX CORP                     COM              984121103     3131   184700 SH        OTHER   1                  0   184700        0
ZALE CORP NEW                  COM              988858106     3069   108800 SH        OTHER   1                  0   108800        0