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

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