| Company | 2014 Engineering Revenue ($) | |
| 1 | Fluor | $729,650,000 |
| 2 | WSP | Parsons Brinckerhoff | $239,435,952 |
| 3 | Arup | $144,879,099 |
| 4 | Vanderweil Engineers | $104,653,700 |
| 5 | Affiliated Engineers | $101,735,000 |
| 6 | Syska Hennessy Group | $100,406,189 |
| 7 | KPFF Consulting Engineers | $100,272,200 |
| 8 | Henderson Engineers | $77,486,099 |
| 9 | Simpson Gumpertz & Heger | $76,939,000 |
| 10 | Jensen Hughes | $72,022,905 |
| 11 | KJWW Engineering Consultants | $57,430,000 |
| 12 | Smith Seckman Reid | $54,535,590 |
| 13 | ME Engineers | $51,640,000 |
| 14 | TTG | $50,716,502 |
| 15 | BR+A Consulting Engineers | $46,000,000 |
| 16 | Magnusson Klemencic Associates | $43,651,196 |
| 17 | Walter P Moore | $42,030,337 |
| 18 | Aon Fire Protection Engineering | $40,306,732 |
| 19 | DeSimone Consulting Engineers | $40,102,650 |
| 20 | Environmental Systems Design | $39,300,000 |
| 21 | TLC Engineering for Architecture | $38,178,868 |
| 22 | RDK Engineers | $33,051,000 |
| 23 | RMF Engineering | $33,044,000 |
| 24 | Coffman Engineers | $29,902,000 |
| 25 | Mazzetti | $26,863,875 |
| 26 | I. C. Thomasson Associates | $26,400,000 |
| 27 | Cardno Haynes Whaley | $23,207,485 |
| 28 | Heapy Engineering | $23,132,853 |
| 29 | Degenkolb Engineers | $22,769,783 |
| 30 | KCI Technologies | $21,900,000 |
| 31 | Robins & Morton | $21,900,000 |
| 32 | Martin/Martin | $21,661,459 |
| 33 | M/E Engineering | $21,610,000 |
| 34 | P2S Engineering | $21,400,000 |
| 35 | Bala Consulting Engineers | $17,700,000 |
| 36 | Bridgers & Paxton Consulting Engineers | $17,361,991 |
| 37 | Dunham Associates | $17,000,000 |
| 38 | KLH Engineers | $16,164,519 |
| 39 | Wallace Engineering | $15,270,000 |
| 40 | Karpinski Engineering | $14,671,900 |
| 41 | GHT Ltd. | $12,188,605 |
| 42 | CJL Engineering | $12,102,135 |
| 43 | Swanson Rink | $11,830,000 |
| 44 | ThermalTech Engineering | $11,700,000 |
| 45 | Peter Basso Associates | $11,700,000 |
| 46 | Spectrum Engineers | $11,471,935 |
| 47 | Allen & Shariff | $10,530,558 |
| 48 | Zak Companies | $7,288,507 |
| 49 | Wick Fisher White | $6,873,000 |
| 50 | OLA Consulting Engineers | $6,613,000 |
| 51 | Kamm Consulting | $5,808,190 |
| 52 | William Tao & Associates | $5,400,000 |
| 53 | G&W Engineering | $3,673,500 |
| 54 | Allegheny Design Services | $1,403,286 |
| 55 | TBC | $773,334 |
| 56 | Yates Companies, The | $400,000 |
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