BesaGov

Top federal contractors in Maryland

6,304 SAM.gov-registered federal contractors based in Maryland. Ranked by lifetime federal award amount. Updated 2026-08-08.

Firms tracked
6,304
Top-50 lifetime $
$76.13B
Top NAICS
8

Top 50 federal contractors in Maryland

# Firm City NAICS Lifetime $ Contracts
1 Lockheed Martin Corp Bethesda 335311 $51.35B 26
2 Consolidated Nuclear Security, Llc Frederick 561210 $4.04B 1
3 The Johns Hopkins University Applied Physics Laboratory Llc Laurel 541330 $1.76B 2,482
4 Maryland State Department Of Education Baltimore 541720 $1.40B 5
5 Bae Systems Technology Solutions & Services Inc. Rockville 541990 $1.09B 1,680
6 The Johns Hopkins University Baltimore 541715 $1.05B 599
7 Leidos, Inc. Gaithersburg 541330 $962.35M 131
8 Kbr Wyle Services, Llc Fulton 541330 $862.11M 434
9 United Cleanup Oak Ridge Llc Germantown 562910 $797.17M 2
10 Fcn, Inc. Rockville 541519 $782.72M 3,676
11 International Business Machines Corporation Bethesda 541511 $749.77M 4,088
12 Tcom, L.P. Columbia 334511 $709.76M 25
13 Leidos Biomedical Research Inc Frederick 541715 $667.30M 151
14 Whiting-Turner Contracting Company, The Baltimore 236220 $634.89M 174
15 Kbr Wyle Services, Llc Lexington Park 541330 $599.17M 232
16 Northrop Grumman Systems Corporation Linthicum Heights 334511 $574.41M 131
17 Fairwinds Technologies Llc Aberdeen Proving Ground 541519 $542.68M 232
18 The Henry M. Jackson Foundation For The Advancement Of Military Medicine, Inc. Bethesda 541715 $444.54M 190
19 Tribalco Llc Bethesda 334220 $409.69M 615
20 University Of Maryland, College Park College Park 541715 $397.55M 335
21 Clark Construction Group Llc Bethesda 236220 $396.89M 54
22 The Johns Hopkins Medical Services Corporation Baltimore 524114 $380.23M 4
23 Leidos, Inc. Gaithersburg 561210 $360.19M 26
24 Westat, Inc. Bethesda 541611 $358.48M 778
25 Rohde & Schwarz USA, Inc. Columbia 334511 $305.04M 594
26 Association Of Universities For Research In Astronomy, Inc. Baltimore — $290.94M 7
27 Northrop Grumman Systems Corporation Linthicum Heights 336413 $275.95M 776
28 Sodexo Management Inc. Gaithersburg 722310 $267.66M 82
29 The Environment Maryland Department Of Baltimore 541620 $252.50M 35
30 Asrc Federal System Solutions Llc Beltsville 541513 $234.92M 104
31 University Of Maryland, Baltimore Baltimore 812930 $225.75M 243
32 Maryland Department Of Health Baltimore 923120 $216.52M 2
33 Colossal Contracting Llc Annapolis 541519 $207.30M 841
34 Mistral Inc Bethesda 336411 $202.09M 15
35 Frequentis USA, Inc Columbia 334210 $197.33M 26
36 Bcg Federal Corp. Bethesda 541990 $182.28M 26
37 Nih Bayview Acquisition Llc Lutherville Timonium 531120 $177.85M 1
38 Motorola Solutions, Inc. Linthicum Heights 334220 $157.11M 4,890
39 Abt Global Llc Rockville 541611 $153.96M 242
40 Thales Defense & Security Inc Clarksburg 811210 $152.31M 1,386
41 Jbg/Federal Center, L.L.C. Chevy Chase 236220 $143.35M 116
42 Axle Informatics, Llc North Bethesda 541690 $142.53M 279
43 Tista Science And Technology Corporation Rockville 541512 $140.92M 57
44 American Centrifuge Operating, Llc Bethesda 325180 $134.81M 3
45 Index Analytics Llc Windsor Mill 541690 $128.06M 41
46 Helicopter Transport Services, Llc Baltimore 481212 $126.77M 49
47 Esimplicity Inc Silver Spring 541512 $125.21M 42
48 Smiths Detection Inc. Edgewood 811210 $124.09M 645
49 Asrc Federal Facilities Logistics Llc Beltsville 561110 $123.44M 1,064
50 Transoceanic Cable Ship Company Llc Baltimore 483111 $120.39M 9

Top NAICS in Maryland

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FAQ

How many federal contractors are based in Maryland?

BesaGov tracks 6,304 SAM.gov-registered firms whose physical state of business is Maryland. The list updates weekly as new entities register or update their SAM profile.

Who are the largest federal contractors in Maryland?

By lifetime federal award amount, the largest Maryland-based contractors include LOCKHEED MARTIN CORP, CONSOLIDATED NUCLEAR SECURITY, LLC, THE JOHNS HOPKINS UNIVERSITY APPLIED PHYSICS LABORATORY LLC. See the full top-50 list above.

Can I get notified when a new firm registers in Maryland?

Yes. Sign up for the free weekly Maryland digest above. We'll email you new SAM.gov registrations and award activity for the state — no login required.

Is this data official?

Firm registrations come from SAM.gov entity public extracts. Lifetime award totals come from USAspending.gov. Both are official U.S. government data sources, refreshed weekly.