2018 Top 100

We rank the largest government contractors based on their fiscal 2017 prime contracts in IT, systems integration, professional services and telecommunications.

Read our analysis of the 2018 Top 100.

See our profile of the new No. 1 company, General Dynamics.

We look back at 25 years of Top 100s.

Register for our June 20 Top 100 webcast 

COMPANIES BY INDUSTRY SECTOR
2018 Company Contracts 2017
Communications
18 L3 Technologies $1,663,628,000 19
87 Motorola Solutions $224,005,000 98
95 Digital Management Inc. $206,636,000 87
Consulting
11 Accenture $2,308,104,000 13
23 Deloitte LLP $1,421,248,000 20
51 PricewaterhouseCoopers (to be renamed after acquistion by Veritas) $390,199,000 72
74 KPMG $284,551,000 77
97 Ernst & Young $185,278,000
Defense
1 General Dynamics Corp. $7,263,197,000 6
15 Harris Corp. $1,804,137,000 17
22 BAE Systems $1,459,791,000 18
3 Northrop Grumman $6,665,651,000 3
31 General Atomics Technologies Corp. $798,154,000 36
37 Rockwell Collins Inc. $647,646,000 48
4 Raytheon $5,791,611,000 5
5 Lockheed Martin $5,594,442,000 2
6 Boeing Co. $5,339,648,000 4
Engineering services
20 Fluor Corp. $1,539,244,000 21
25 Jacobs Engineering Group $1,108,558,000 25
39 Arctic Slope Regional Corp. $590,650,000 37
40 Leonardo DRS $571,116,000 43
53 Tetra Tech Inc. $378,784,000 47
57 United Technologies Corp. $351,329,000 46
84 Adams Communication & Engineering Technology $232,809,000 88
92 Scientific Research Corp. $212,331,000 90
Hardware
32 Dell Technologies $782,502,000 34
78 Cisco Systems Inc. $258,273,000 70
81 HP Inc. $250,038,000 51
86 GE $226,311,000 74
International development
19 Chemonics International $1,613,328,000 28
64 Development Alternatives Inc. $330,556,000 59
IT services
33 Alion Science & Technology $764,911,000 32
34 Peraton $740,285,000 17
41 Unisys Corp. $570,918,000 39
47 ECS Federal $466,040,000 62
54 FCN Inc. $373,781,000 67
62 Actionet Inc. $332,315,000 57
65 Salient CRGT $327,841,000 71
68 Smartronix $295,369,000 85
80 Colsa Corp. $251,365,000 92
88 By Light Professional IT Services Inc. $223,779,000 84
91 Blue Tech Inc. $214,046,000
96 Alvarez & Associates $199,134,000 78
Professional services
100 Nana Regional Corp. $177,645,000
12 PAE $2,092,124,000 15
16 KBR $1,798,513,000 23
17 AECOM $1,752,258,000 16
27 Engility Corp. $1,016,605,000 22
28 The Aerospace Corp. $948,145,000 29
43 S&K Aerospace $521,489,000
45 DynCorp International $503,579,000
50 Parsons Corp. $416,752,000 50
55 RTI International $355,313,000 44
59 Battelle Memorial Institute $346,381,000 58
61 Torch Technologies $342,715,000 68
63 Vectrus $330,901,000 42
71 Huntington Ingalls $292,076,000
89 Trax International Corp. $220,959,000 82
90 Ukpeagvik Inupiat Corp. $219,001,000
98 Noblis Inc. $184,483,000 97
99 SRC Inc. $183,116,000
Research
66 Abt Associates $311,250,000 66
67 Westat Inc. $296,848,000 61
Software
56 Microsoft $353,600,000 65
Space
36 Sierra Nevada Corp. $651,816,000 38
46 SpaceX $482,117,000 54
79 Orbital ATK $251,549,000
82 Viasat $245,270,000 56
Systems integration
10 CACI International Inc. $2,330,204,000 9
2 Leidos Inc. $6,791,828,000 1
21 ManTech International $1,465,647,000 30
24 IBM Corp. $1,188,231,000 24
26 CGI Federal $1,051,800,000 26
35 Serco Group $723,403,000 31
52 ICF International $384,090,000 52
58 NTT Data $349,840,000
7 Booz Allen Hamilton $4,138,643,000 8
72 Maximus Inc. $288,998,000 69
75 NCI Inc. $276,252,000 64
76 KeyW Corp. $269,368,000 96
8 Perspecta, formerly DXC public sector, Vencore and Keypoint $2,952,017,000 10
9 Science Applications International Corp. $2,685,392,000 11
Telecommunications
13 Verizon Communications $2,059,230,000 12
14 AT&T Inc. $1,979,011,000 14
29 CenturyLink $946,064,000 35
Value-added distributor
38 Carahsoft Technology Corp. $644,388,000 40
69 immixGroup $295,064,000 73
Value-added reseller
30 CDW-G $871,412,000 33
42 Mythics Inc. $531,488,000 45
44 Insight Enterprises $506,420,000 60
48 Iron Bow Technologies $462,625,000 49
49 World Wide Technology $439,952,000 41
60 DLT Solutions $346,240,000 55
70 Red River Computer Co. $294,245,000 63
73 Four Points Technology $287,251,000 83
77 Sterling Computers Corp. $259,817,000 91
83 Government Acquisitions $235,132,000 100
85 Thundercat Technology $227,624,000 89
93 New Tech Solutions Inc. $212,108,000
94 Four LLC $208,380,000 81
Federal Procurement Data System, Washington Technology

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