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, 2011

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, 9th Floor
         Chicago, IL  60601

13F File Number:  028-02715

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 09, 2011

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

Form 13F Information Table Entry Total:    43

Form 13F Information Table Value Total:    $325,007 (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   028-00121                     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     2943    60000 SH       OTHER   01                  0    60000        0
ABITIBIBOWATER INC             COM NEW          003687209       76     2833 SH       DEFINED                  2833        0        0
AIR PRODS & CHEMS INC          COM              009158106      992    11000 SH       OTHER   01                  0    11000        0
ALTRIA GROUP INC               COM              02209S103     3124   120000 SH       OTHER   01                  0   120000        0
AUTOMATIC DATA PROCESSING IN   COM              053015103     1796    35000 SH       OTHER   01                  0    35000        0
BANK OF AMERICA CORPORATION    7.25%CNV PFD L   060505682      253      250 SH       DEFINED 01                250        0        0
BARCLAYS BANK PLC              ADS7.75%PFD S4   06739H511    20576   800000 SH       DEFINED                800000        0        0
CATERPILLAR INC DEL            COM              149123101     4009    36000 SH       OTHER   01                  0    36000        0
CHEVRON CORP NEW               COM              166764100     6987    65000 SH       OTHER   01                  0    65000        0
CIT GROUP INC                  COM NEW          125581801      299     7026 SH       DEFINED                  7026        0        0
COCA COLA CO                   COM              191216100     6634   100000 SH       OTHER   01                  0   100000        0
CONOCOPHILLIPS                 COM              20825C104     4392    55000 SH       OTHER   01                  0    55000        0
DISNEY WALT CO                 COM DISNEY       254687106      215     5000 SH       OTHER   01                  0     5000        0
ENTERPRISE PRODS PARTNERS L    COM              293792107     3230    75000 SH       OTHER   01                  0    75000        0
EXXON MOBIL CORP               COM              30231G102     9254   110000 SH       OTHER   01                  0   110000        0
FIFTH STREET FINANCE CORP      COM              31678A103     9835   736689 SH       DEFINED 01             736689        0        0
FREEPORT-MCMORAN COPPER & GO   COM              35671D857     3333    60000 SH       OTHER   01                  0    60000        0
INTEL CORP                     COM              458140100     1514    75000 SH       OTHER   01                  0    75000        0
INTERMEC INC                   COM              458786100   106963  9913139 SH       DEFINED 01            9913139        0        0
INTERNATIONAL BUSINESS MACHS   COM              459200101     3751    23000 SH       OTHER   01                  0    23000        0
ISHARES TR                     RUSSELL 2000     464287655     9259   110000 SH       DEFINED 01             110000        0        0
ISHARES TR                     S&P 500 INDEX    464287200    39903   300000 SH       DEFINED 01             300000        0        0
JOHNSON & JOHNSON              COM              478160104     3851    65000 SH       OTHER   01                  0    65000        0
JPMORGAN CHASE & CO            COM              46625H100      899    19500 SH       OTHER   01                  0    19500        0
KRAFT FOODS INC                CL A             50075N104     2666    85000 SH       OTHER   01                  0    85000        0
MCDONALDS CORP                 COM              580135101     4033    53000 SH       OTHER   01                  0    53000        0
MEDTRONIC INC                  COM              585055106      984    25000 SH       OTHER   01                  0    25000        0
MERCK & CO INC NEW             COM              58933Y105     2311    70000 SH       OTHER   01                  0    70000        0
MICROSOFT CORP                 COM              594918104      508    20000 SH       OTHER   01                  0    20000        0
NRG ENERGY INC                 COM NEW          629377508        3      118 SH       DEFINED                   118        0        0
OCCIDENTAL PETE CORP DEL       COM              674599105     3135    30000 SH       OTHER   01                  0    30000        0
PEPSICO INC                    COM              713448108     2898    45000 SH       OTHER   01                  0    45000        0
PHILIP MORRIS INTL INC         COM              718172109     7876   120000 SH       OTHER   01                  0   120000        0
PLAINS ALL AMERN PIPELINE L    UNIT LTD PARTN   726503105     4142    65000 SH       OTHER   01                  0    65000        0
PRAXAIR INC                    COM              74005P104     1829    18000 SH       OTHER   01                  0    18000        0
PROCTER & GAMBLE CO            COM              742718109     3721    60400 SH       OTHER   01                  0    60400        0
SPDR S&P 500 ETF TR            TR UNIT          78462F103    34473   260000 SH       DEFINED 01             260000        0        0
SYSCO CORP                     COM              871829107      554    20000 SH       OTHER   01                  0    20000        0
TARGET CORP                    COM              87612E106     2000    40000 SH       OTHER   01                  0    40000        0
TEXAS INSTRS INC               COM              882508104     1728    50000 SH       OTHER   01                  0    50000        0
WAL MART STORES INC            COM              931142103     2082    40000 SH       OTHER   01                  0    40000        0
WALGREEN CO                    COM              931422109     2609    65000 SH       OTHER   01                  0    65000        0
WILLIAMS PARTNERS L P          COM UNIT L P     96950F104     3367    65000 SH       OTHER   01                  0    65000        0