| TOP 40 SCIENCE + TECHNOLOGY ARCHITECTURE FIRMS | ||
| Rank | Firm | 2015 Revenue |
| 1 | Perkins+Will | $60,040,000 |
| 2 | HDR | $56,664,000 |
| 3 | HOK | $50,435,000 |
| 4 | Payette | $35,458,760 |
| 5 | Stantec | $34,755,593 |
| 6 | Flad Architects | $29,730,000 |
| 7 | SmithGroupJJR | $26,205,000 |
| 8 | DGA | $21,133,997 |
| 9 | Page | $19,500,000 |
| 10 | ZGF Architects | $18,405,848 |
| 11 | CannonDesign | $18,200,000 |
| 12 | EwingCole | $13,140,000 |
| 13 | EYP | $10,251,000 |
| 14 | Studios Architecture | $9,469,391 |
| 15 | BRPH | $8,718,716 |
| 16 | Paulus, Sokolowski and Sartor | $8,019,100 |
| 17 | Perkins Eastman | $7,800,000 |
| 18 | Harley Ellis Devereaux | $7,800,000 |
| 19 | NBBJ | $7,000,000 |
| 20 | Lord Aeck Sargent | $6,657,882 |
| 21 | Davis Brody Bond | $6,232,862 |
| 22 | RS&H | $5,400,000 |
| 23 | Clark Nexsen | $5,300,000 |
| 24 | Kirksey Architecture | $4,739,638 |
| 25 | Gensler | $4,120,000 |
| 26 | Hastings+Chivetta Architects | $3,850,000 |
| 27 | HKS | $3,163,447 |
| 28 | BWBR | $3,100,508 |
| 29 | SMMA | Symmes Maini & McKee Associates | $2,319,498 |
| 30 | Tsoi/Kobus & Associates | $2,171,212 |
| 31 | Ware Malcomb | $2,137,290 |
| 32 | Alliiance | $2,095,730 |
| 33 | HGA | $1,420,000 |
| 34 | NORR | $1,371,368 |
| 35 | RSP Architects | $1,370,000 |
| 36 | VOA Associates | $1,276,849 |
| 37 | Solomon Cordwell Buenz | $1,198,928 |
| 38 | Skidmore, Owings & Merrill | $1,150,519 |
| 39 | Heery International | $921,161 |
| 40 | Emersion Design | $913,189 |
| 41 | Leo A Daly | $844,837 |
| 42 | Diamond Schmitt Architects | $727,000 |
| 43 | OZ Architecture | $709,710 |
| 44 | Guernsey | $685,926 |
| 45 | Wilson Architects | $550,000 |
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