United States
Securities and Exchange Commission
Washington, DC  20549

Form 13F


Report for the Calendar Year or Quarter Ended:		March 31, 2003

Report type:	13F Holdings Report

Institutional Investment Manager Filing this Report:

Name:		Lockheed Martin Investment Management Company
		6705 Rockledge Drive, Suite 550
		Bethesda, MD  20817

13F File Number #28-2847

Person signing this report on Behalf of Reporting Manager:

Name:		Wayne H. Shaner
Title:		Managing Director
Phone:		301-571-7127

Signature, Place, and Date of Signing:

Wayne H. Shaner	Bethesda, MD  	April 24, 2003




I am signing this report as required by the Securities Exchange Act of 1934.


                                                              FORM 13F
                                                           March 31, 2003


                                                           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
------------------------------ ---------------- --------- -------- -------- --- ---- ------- ------------ -------- -------- --------
                                                                                           
AEP Industries Inc.            COM              001031103     5190   600000 SH       SOLE                   600000
AGCO Corporation               COM              001084102     5232   325000 SH       SOLE                   325000
ASA Ltd.                       COM              002050102    12492   360000 SH       SOLE                   360000
AT&T Wireless Services         COM              00209A106     3300   500000 SH       SOLE                   500000
Adv Micro Devices              COM              007903107     8343  1350000 SH       SOLE                  1350000
Airborne Inc.                  COM              009269101     5883   300000 SH       SOLE                   300000
Alberto Culver Co. CL-A        COM              013068200     5994   125000 SH       SOLE                   125000
Alleghany Corp                 COM              017175100     4024    24576 SH       SOLE                    24576
Allied Capital                 COM              01903Q108     6993   350000 SH       SOLE                   350000
Altria Group Inc.              COM              02209s100    29960  1000000 SH       SOLE                  1000000
Anadarko Pete Corp.            COM              032511107    18200   400000 SH       SOLE                   400000
Anglogold Ltd ADR              COM              035128206    38329  1270000 SH       SOLE                  1270000
Apache Corporation             COM              037411105    28200   456750 SH       SOLE                   456750
Archer-Daniels-Midland         COM              039483102     5400   500000 SH       SOLE                   500000
BJ's Wholesale Club Inc.       COM              05548J106     4802   425000 SH       SOLE                   425000
Berkshire Hathaway B           COM              084670207    50219    23500 SH       SOLE                    23500
Boeing Company                 COM              097023105     2506   100000 SH       SOLE                   100000
Bowne & Company                COM              103043105    10000  1000000 SH       SOLE                  1000000
Bristol-Myers Squibb           COM              110122108    23243  1100000 SH       SOLE                  1100000
Brookstone Inc.                COM              114537103      652    40000 SH       SOLE                    40000
Burlington Northern SF         COM              12189t104     6225   250000 SH       SOLE                   250000
Carpenter Technology           COM              144285103     4821   475000 SH       SOLE                   475000
ChevronTexaco Corp             COM              166764100     6465   100000 SH       SOLE                   100000
Circuit City Stores            COM              172737108     1300   250000 SH       SOLE                   250000
Cleveland-Cliffs Inc.          COM              185896107     5595   300000 SH       SOLE                   300000
Coca-Cola Company              COM              191216100     6072   150000 SH       SOLE                   150000
ConAgra Inc.                   COM              205887102    12048   600000 SH       SOLE                   600000
ConocoPhillips                 COM              20825C104    45041   840310 SH       SOLE                   840310
Corn Products Intl             COM              219023108     6998   240000 SH       SOLE                   240000
Corning Incorporated           COM              219350105     5548   950000 SH       SOLE                   950000
Cott Corporation               COM              22163n106     5265   300000 SH       SOLE                   300000
Cummins Engine                 COM              231021106     5289   215000 SH       SOLE                   215000
Dow Jones Co.                  COM              260561105     7088   200000 SH       SOLE                   200000
Du Pont(E.I.)deNemours         COM              263534109    14961   385000 SH       SOLE                   385000
Eastman Kodak Corp.            COM              277461109     5920   200000 SH       SOLE                   200000
Esg Re Limited                 COM              g31215109       64   255000 SH       SOLE                   255000
Exxon Mobil Corp               COM              30231G102     6116   175000 SH       SOLE                   175000
Fairfax Financial Hldg         COM              303901102     4076    80000 SH       SOLE                    80000
GEHL Company                   COM              368483103      639    75300 SH       SOLE                    75300
Gannett Company                COM              364730101    35215   500000 SH       SOLE                   500000
Gatx Corp                      COM              361448103     5068   350000 SH       SOLE                   350000
General Motors Cl H            COM              370442832     5040   450000 SH       SOLE                   450000
Germany Fund                   COM              374143105     1389   350000 SH       SOLE                   350000
Gold Field Ltd New             COM              38059t106     7087   675000 SH       SOLE                   675000
Grainger, W.W. Inc.            COM              384802104    12870   300000 SH       SOLE                   300000
Grupo TMM-SP ADR A             COM              40051D105    30727  7818515 SH       SOLE                  7818515
Hecla Mining Co.               COM              422704106     2098   637600 SH       SOLE                   637600
Helmerich & Payne Inc.         COM              423452101    12810   500000 SH       SOLE                   500000
Hershey Foods Corp.            COM              427866108     6266   100000 SH       SOLE                   100000
Home Depot Inc.                COM              437076102     4872   200000 SH       SOLE                   200000
Hubbell Inc. Cl B              COM              443510201    19562   625000 SH       SOLE                   625000
IMC Global, Inc.               COM              449669100    12506  1300000 SH       SOLE                  1300000
Intermet                       COM              45881K104      146    40000 SH       SOLE                    40000
Kerr McGee Corp.               COM              492386107    23351   575000 SH       SOLE                   575000
Kimberly-Clark Corp            COM              494368103     2273    50000 SH       SOLE                    50000
LSI Logic Corp                 COM              502161102     5424  1200000 SH       SOLE                  1200000
Lancaster Colony Corp          COM              513847103     3045    79400 SH       SOLE                    79400
Leucadia National Corp         COM              527288104     7148   200000 SH       SOLE                   200000
Loew's Corporation             COM              540424108    24900   625000 SH       SOLE                   625000
Longview Fibre Co              COM              543213102     2494   375000 SH       SOLE                   375000
Louisiana-Pacific              COM              546347105     9516  1200000 SH       SOLE                  1200000
Marathon Oil Corp              COM              565849106    28764  1200000 SH       SOLE                  1200000
Markel Corporation             COM              570535104    12975    58000 SH       SOLE                    58000
Mattel Inc.                    COM              577081102     4500   200000 SH       SOLE                   200000
McDonald's Corporation         COM              580135101     7230   500000 SH       SOLE                   500000
Merck & Co.                    COM              589331107    42454   775000 SH       SOLE                   775000
Meridian Gold Inc.             COM              589975101     1890   200000 SH       SOLE                   200000
Mesabi Trust                   COM              590672101      898   200000 SH       SOLE                   200000
Newmont Mining Corp.           COM              651639106    41523  1587869 SH       SOLE                  1587869
Old Republic Intl              COM              680223104     8159   305000 SH       SOLE                   305000
Park Place Entertainment       COM              700690100     8918  1252500 SH       SOLE                  1252500
Placer Dome, Inc.              COM              725906101    15190  1550000 SH       SOLE                  1550000
Pope & Talbot                  COM              732827100     4392   350000 SH       SOLE                   350000
Procter & Gamble               COM              742718109      890    10000 SH       SOLE                    10000
RPM Inc. (Ohio)                COM              749685103     2100   200000 SH       SOLE                   200000
Railamerica Inc.               COM              750753105    13439  2203162 SH       SOLE                  2203162
Royal Gold Inc.                COM              780287108     5880   400000 SH       SOLE                   400000
Ruddick Corporation            COM              781258108     3198   260000 SH       SOLE                   260000
San Juan Basin Rty             COM              798241105      736    50000 SH       SOLE                    50000
Saul Centers Inc.              COM              804395101     4610   200000 SH       SOLE                   200000
Schering-Plough Corp           COM              806605101    20059  1125000 SH       SOLE                  1125000
Schlumberger Ltd.              COM              806857108     8742   230000 SH       SOLE                   230000
Schweitzer-Mauduit             COM              808541106     2812   125000 SH       SOLE                   125000
Sherwin-Williams Co.           COM              824348106    14536   550000 SH       SOLE                   550000
Smithfield Foods, Inc.         COM              832248108     4519   255000 SH       SOLE                   255000
Tenneco Automotive Inc.        COM              880349105     1808   800000 SH       SOLE                   800000
The Walt Disney                COM              254687106    12850   755000 SH       SOLE                   755000
Thomas & Betts Corp.           COM              884315102     4963   350000 SH       SOLE                   350000
Timken Company                 COM              887389104     8591   550000 SH       SOLE                   550000
Transocean Sedco Forex         COM              G90078109    13804   675000 SH       SOLE                   675000
Triarc Companies Inc.          COM              895927101    19495   700000 SH       SOLE                   700000
Tyco International LTD         COM              902124106    16075  1250000 SH       SOLE                  1250000
Tyson Foods Inc-Cl A           COM              902494103     9300  1200000 SH       SOLE                  1200000
UST Inc.                       COM              902911106     5520   200000 SH       SOLE                   200000
Union Pacific Corp             COM              907818108     9900   180000 SH       SOLE                   180000
Volvo AB ADR                   COM              928856400     1501    85000 SH       SOLE                    85000
Washington Post - Cl B         COM              939640108    14990    22000 SH       SOLE                    22000
Weyerhaeuser Co.               COM              962166104     4783   100000 SH       SOLE                   100000
White Mountains Ins            COM              G9618E107     9180    27000 SH       SOLE                    27000
Yankee Candle                  COM              984757104     1703   100000 SH       SOLE                   100000
REPORT SUMMARY		    100 DATA RECORDS		   1045180	     0 OTHER MANAGERS ON WHOSE BEHALF REPORT IS FILED