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

                                    Form 13F

                              Form 13F COVER PAGE

Report for the Calendar Year or Quarter Ended: March 31, 2008

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     May 12, 2008

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:     120

Form13F Information Table Value Total:     $1,355,634 (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



                                    
                                                     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     3861    70000 SH       OTHER   01                  0    70000        0
ALABAMA AIRCRAFT IND INC       COM              01023E100      158    54175 SH       DEFINED 01              54175        0        0
ALPHARMA INC                   CL A             020813101     1193    45500 SH       OTHER   01                  0    45500        0
ALTRIA GROUP INC               COM              02209S103     4995   225000 SH       OTHER   01                  0   225000        0
AMERICAN EXPRESS CO            COM              025816109     2523    57700 SH       OTHER   01                  0    57700        0
AMERICAN INTL GROUP INC        COM              026874107     1881    43500 SH       OTHER   01                  0    43500        0
AMERIPRISE FINL INC            COM              03076C106     1298    25040 SH       OTHER   01                  0    25040        0
ANHEUSER BUSCH COS INC         COM              035229103     2467    52000 SH       OTHER   01                  0    52000        0
APPLE INC                      COM              037833100     2870    20000 SH       OTHER   01                  0    20000        0
AUTOMATIC DATA PROCESSING IN   COM              053015103     2289    54000 SH       OTHER   01                  0    54000        0
AVALONBAY CMNTYS INC           COM              053484101     1544    16000 SH       OTHER   01                  0    16000        0
BAKER HUGHES INC               COM              057224107    31442   459000 SH       DEFINED 01             459000        0        0
BANK OF AMERICA CORPORATION    COM              060505104     3222    85000 SH       OTHER   01                  0    85000        0
BARCLAYS BANK PLC              ADS7.75%PFD S4   06739H511    20000   800000 SH       DEFINED                800000        0        0
BEARINGPOINT INC               COM              074002106     1685  1002900 SH       OTHER   01                  0  1002900        0
BIO RAD LABS INC               CL A             090572207      151     1700 SH       OTHER   01                  0     1700        0
BLACK & DECKER CORP            COM              091797100      238     3600 SH       OTHER   01                  0     3600        0
BOSTON PROPERTIES INC          COM              101121101     2173    23600 SH       OTHER   01                  0    23600        0
BP PLC                         SPONSORED ADR    055622104     2123    35000 SH       OTHER   01                  0    35000        0
CAMDEN PPTY TR                 SH BEN INT       133131102     1431    28500 SH       OTHER   01                  0    28500        0
CATERPILLAR INC DEL            COM              149123101     3523    45000 SH       OTHER   01                  0    45000        0
CHEVRON CORP NEW               COM              166764100     8065    94480 SH       OTHER   01                  0    94480        0
CISCO SYS INC                  COM              17275R102     2409   100000 SH       OTHER   01                  0   100000        0
CITIGROUP INC                  COM              172967101     3369   157300 SH       OTHER   01                  0   157300        0
COCA COLA CO                   COM              191216100     8065   132500 SH       OTHER   01                  0   132500        0
CONAGRA FOODS INC              COM              205887102      283    11800 SH       OTHER   01                  0    11800        0
CONOCOPHILLIPS                 COM              20825C104     7088    93000 SH       OTHER   01                  0    93000        0
CONSECO INC                    COM NEW          208464883     1771   173600 SH       OTHER   01                  0   173600        0
CORPORATE OFFICE PPTYS TR      SH BEN INT       22002T108     1583    47100 SH       OTHER   01                  0    47100        0
DISCOVERY HOLDING CO           CL A COM         25468Y107     3047   143600 SH       OTHER   01                  0   143600        0
DONNELLEY R R & SONS CO        COM              257867101     1264    41700 SH       OTHER   01                  0    41700        0
DOUGLAS EMMETT INC             COM              25960P109     1871    84800 SH       OTHER   01                  0    84800        0
DOVER CORP                     COM              260003108      326     7800 SH       OTHER   01                  0     7800        0
ECHOSTAR CORP                  CL A             278768106      644    21800 SH       OTHER   01                  0    21800        0
ELECTRONICS FOR IMAGING INC    COM              286082102     1112    74500 SH       OTHER   01                  0    74500        0
EMERSON ELEC CO                COM              291011104     3540    68800 SH       OTHER   01                  0    68800        0
ESSEX PPTY TR INC              COM              297178105     2006    17600 SH       OTHER   01                  0    17600        0
EXPEDIA INC DEL                COM              30212P105     1171    53500 SH       OTHER   01                  0    53500        0
EXXON MOBIL CORP               COM              30231G102    19910   235400 SH       OTHER   01                  0   235400        0
FOOT LOCKER INC                COM              344849104     1974   167700 SH       OTHER   01                  0   167700        0
FORD MTR CO DEL                COM PAR $0.01    345370860      262    45717 SH       DEFINED                 45717        0        0
FORTUNE BRANDS INC             COM              349631101     1112    16000 SH       OTHER   01                  0    16000        0
GENERAL ELECTRIC CO            COM              369604103     1776    48000 SH       DEFINED 01              48000        0        0
GENERAL ELECTRIC CO            COM              369604103     8327   225000 SH       OTHER   01                  0   225000        0
GOLDMAN SACHS GROUP INC        COM              38141G104      827     5000 SH       SOLE                     5000        0        0
GRAINGER W W INC               COM              384802104      443     5800 SH       OTHER   01                  0     5800        0
HALLIBURTON CO                 COM              406216101     2950    75000 SH       OTHER   01                  0    75000        0
HARLEY DAVIDSON INC            COM              412822108     1046    27900 SH       OTHER   01                  0    27900        0
HARTFORD FINL SVCS GROUP INC   COM              416515104    15040   198500 SH       DEFINED                198500        0        0
HOME DEPOT INC                 COM              437076102     1818    65000 SH       OTHER   01                  0    65000        0
HSBC HLDGS PLC                 SPON ADR NEW     404280406     3704    45000 SH       OTHER   01                  0    45000        0
IDEARC INC                     COM              451663108      252    69300 SH       OTHER   01                  0    69300        0
INTEL CORP                     COM              458140100     4234   199900 SH       OTHER   01                  0   199900        0
INTERMEC INC                   COM              458786100   280876 12657764 SH       DEFINED 01           12657764        0        0
ISHARES TR                     MSCI EAFE IDX    464287465    54745   761400 SH       DEFINED 01             761400        0        0
JOHNSON & JOHNSON              COM              478160104     5709    88000 SH       OTHER   01                  0    88000        0
JP MORGAN CHASE & CO           COM              46625H100     4286    99800 SH       OTHER   01                  0    99800        0
KINETIC CONCEPTS INC           COM NEW          49460W208      596    12900 SH       OTHER   01                  0    12900        0
KRAFT FOODS INC                CL A             50075N104     2348    75705 SH       OTHER   01                  0    75705        0
LABORATORY CORP AMER HLDGS     COM NEW          50540R409      147     2000 SH       OTHER   01                  0     2000        0
LAUDER ESTEE COS INC           CL A             518439104      793    17300 SH       OTHER   01                  0    17300        0
LEGG MASON INC                 COM              524901105      677    12100 SH       OTHER   01                  0    12100        0
LIMITED BRANDS INC             COM              532716107     1197    70000 SH       OTHER   01                  0    70000        0
LIZ CLAIBORNE INC              COM              539320101     1089    60000 SH       OTHER   01                  0    60000        0
LOWES COS INC                  COM              548661107      184     8000 SH       OTHER   01                  0     8000        0
MCDONALDS CORP                 COM              580135101     3904    70000 SH       OTHER   01                  0    70000        0
MCGRAW HILL COS INC            COM              580645109     3326    90000 SH       OTHER   01                  0    90000        0
MDS INC                        COM              55269P302     3312   170000 SH       OTHER   01                  0   170000        0
MEDTRONIC INC                  COM              585055106     1766    36500 SH       OTHER   01                  0    36500        0
MERRILL LYNCH & CO INC         COM              590188108     2037    50000 SH       OTHER   01                  0    50000        0
MICROCHIP TECHNOLOGY INC       COM              595017104      900    27500 SH       OTHER   01                  0    27500        0
MICRON TECHNOLOGY INC          COM              595112103     1134   190000 SH       OTHER   01                  0   190000        0
MICROSOFT CORP                 COM              594918104     3454   121700 SH       OTHER   01                  0   121700        0
NATIONAL SEMICONDUCTOR CORP    COM              637640103     2530   138100 SH       OTHER   01                  0   138100        0
NEWS CORP                      CL A             65248E104     2389   127400 SH       OTHER   01                  0   127400        0
NORTHROP GRUMMAN CORP          COM              666807102   360325  4630833 SH       DEFINED 01            4630833        0        0
NORTHROP GRUMMAN CORP          COM              666807102   309197  3973748 SH       SOLE                  3973748        0        0
NOVO-NORDISK A S               ADR              670100205     2770    40000 SH       OTHER   01                  0    40000        0
OCCIDENTAL PETE CORP DEL       COM              674599105     3585    49000 SH       OTHER   01                  0    49000        0
OMNICARE INC                   COM              681904108     1645    90600 SH       OTHER   01                  0    90600        0
PARTNERRE LTD                  COM              G6852T105      206     2700 SH       OTHER   01                  0     2700        0
PEPSICO INC                    COM              713448108     6144    85100 SH       OTHER   01                  0    85100        0
PRAXAIR INC                    COM              74005P104     2864    34000 SH       OTHER   01                  0    34000        0
PROCTER & GAMBLE CO            COM              742718109     7659   109300 SH       OTHER   01                  0   109300        0
PROLOGIS                       SH BEN INT       743410102     2025    34400 SH       OTHER   01                  0    34400        0
PRUDENTIAL FINL INC            COM              744320102     1565    20000 SH       OTHER   01                  0    20000        0
PUBLIC STORAGE                 COM              74460D109     2012    22700 SH       OTHER   01                  0    22700        0
QUALCOMM INC                   COM              747525103     1230    30000 SH       OTHER   01                  0    30000        0
RIO TINTO PLC                  SPONSORED ADR    767204100     2883     7000 SH       OTHER   01                  0     7000        0
ROBERT HALF INTL INC           COM              770323103      489    19000 SH       OTHER   01                  0    19000        0
ROYAL DUTCH SHELL PLC          SPONS ADR A      780259206     2621    38000 SH       OTHER   01                  0    38000        0
SAFECO CORP                    COM              786429100      553    12600 SH       OTHER   01                  0    12600        0
SCRIPPS E W CO OHIO            CL A             811054204     1012    24100 SH       OTHER   01                  0    24100        0
SIMON PPTY GROUP INC NEW       COM              828806109     1979    21300 SH       OTHER   01                  0    21300        0
SL GREEN RLTY CORP             COM              78440X101     1222    15000 SH       OTHER   01                  0    15000        0
SNAP ON INC                    COM              833034101     2446    48100 SH       OTHER   01                  0    48100        0
SOVEREIGN BANCORP INC          COM              845905108     2361   253350 SH       OTHER   01                  0   253350        0
SUN MICROSYSTEMS INC           COM NEW          866810203     1553   100000 SH       OTHER   01                  0   100000        0
SYSCO CORP                     COM              871829107     1596    55000 SH       OTHER   01                  0    55000        0
TARGET CORP                    COM              87612E106     3041    60000 SH       OTHER   01                  0    60000        0
TAUBMAN CTRS INC               COM              876664103     2214    42500 SH       OTHER   01                  0    42500        0
TENET HEALTHCARE CORP          COM              88033G100     2915   515000 SH       OTHER   01                  0   515000        0
TERADATA CORP DEL              COM              88076W103      953    43200 SH       OTHER   01                  0    43200        0
TEXAS INSTRS INC               COM              882508104     2129    75300 SH       OTHER   01                  0    75300        0
THOR INDS INC                  COM              885160101      997    33500 SH       OTHER   01                  0    33500        0
TIFFANY & CO NEW               COM              886547108      247     5900 SH       OTHER   01                  0     5900        0
TOTAL S A                      SPONSORED ADR    89151E109     3612    48800 SH       OTHER   01                  0    48800        0
TRACTOR SUPPLY CO              COM              892356106      755    19100 SH       OTHER   01                  0    19100        0
TRANSOCEAN INC NEW             SHS              G90073100     2081    15391 SH       OTHER   01                  0    15391        0
UNITED TECHNOLOGIES CORP       COM              913017109     3062    44500 SH       OTHER   01                  0    44500        0
UNIVERSAL AMERICAN CORP        COM              913377107      530    50000 SH       DEFINED                 50000        0        0
VANGUARD INTL EQUITY INDEX F   EMR MKT ETF      922042858    14499   154200 SH       DEFINED 01             154200        0        0
VIRGIN MEDIA INC               COM              92769L101     1921   136500 SH       OTHER   01                  0   136500        0
WAL MART STORES INC            COM              931142103     4109    78000 SH       OTHER   01                  0    78000        0
WALGREEN CO                    COM              931422109     4952   130000 SH       OTHER   01                  0   130000        0
WASHINGTON MUT INC             COM              939322103     1229   119300 SH       OTHER   01                  0   119300        0
WEINGARTEN RLTY INVS           SH BEN INT       948741103     1646    47800 SH       OTHER   01                  0    47800        0
WHOLE FOODS MKT INC            COM              966837106      989    30000 SH       OTHER   01                  0    30000        0
XEROX CORP                     COM              984121103     2246   150000 SH       OTHER   01                  0   150000        0
ZALE CORP NEW                  COM              988858106     1810    91600 SH       OTHER   01                  0    91600        0