| Rank | Company | 2012 Total Revenue ($) |
| 1 | Stantec | $467,254,421 |
| 2 | HOK | $406,780,000 |
| 3 | HDR Architecture | $325,900,000 |
| 4 | Skidmore, Owings & Merrill | $281,686,000 |
| 5 | IBI Group | $252,552,343 |
| 6 | HKS | $240,300,000 |
| 7 | RTKL Associates | $202,823,000 |
| 8 | Cannon Design | $202,000,000 |
| 9 | SmithGroupJJR | $166,600,000 |
| 10 | DLR Group | $116,400,000 |
| 11 | Hammel, Green and Abrahamson | $112,300,000 |
| 12 | PageSoutherlandPage | $98,500,000 |
| 13 | Leo A Daly | $92,791,291 |
| 14 | EYP | $85,381,169 |
| 15 | Gresham, Smith and Partners | $74,168,177 |
| 16 | EwingCole | $67,700,000 |
| 17 | Flad Architects | $65,200,000 |
| 18 | HNTB Archtecture | $58,468,611 |
| 19 | Heery International | $55,340,000 |
| 20 | SHW Group | $49,281,187 |
| 21 | Little | $46,898,000 |
| 22 | BSA LifeStructures | $45,582,887 |
| 23 | Reynolds, Smith and Hills | $43,600,000 |
| 24 | Ballinger | $43,540,000 |
| 25 | CTA Architects Engineers | $43,229,335 |
| 26 | LPA | $41,840,775 |
| 27 | HLW International | $39,000,000 |
| 28 | NELSON | $38,453,532 |
| 29 | PBK | $38,000,000 |
| 30 | Harley Ellis Devereaux | $37,100,000 |
| 31 | WD Partners | $37,000,000 |
| 32 | PGAL | $36,600,000 |
| 33 | Sasaki Associates | $32,710,169 |
| 34 | S/L/A/M Collaborative, The | $32,426,000 |
| 35 | Moseley Architects | $32,409,210 |
| 36 | Moody Nolan | $26,000,000 |
| 37 | FreemanWhite | $25,600,000 |
| 37 | Westlake Reed Leskosky | $25,600,000 |
| 39 | SMMA | Symmes Maini & McKee Associates | $23,000,000 |
| 40 | Goodwyn, Mills & Cawood | $21,780,000 |
| 41 | Astorino | $21,515,000 |
| 42 | Fanning/Howey Associates | $21,370,000 |
| 43 | Fletcher-Thompson | $19,900,000 |
| 44 | Albert Kahn Family of Companies | $19,576,600 |
| 45 | Epstein | $18,789,000 |
| 46 | Fishbeck, Thompson, Carr & Huber | $17,400,000 |
| 47 | Sherlock, Smith & Adams | $16,893,000 |
| 48 | Hoefer Wysocki Architecture | $16,608,000 |
| 49 | Taylor | $16,196,847 |
| 50 | LawKingdon Architecture | $15,000,000 |
| 51 | Integrated Design Group | $14,598,910 |
| 52 | Environetics | $13,376,338 |
| 53 | Baskervill | $12,707,000 |
| 54 | CASCO | $12,250,000 |
| 55 | Hoffmann Architects | $10,393,000 |
| 56 | TEG Architects - The Estopinal Group | $8,317,770 |
| 57 | BBS Architects, Landscape Architects and Engineers | $8,035,000 |
| 58 | KZF Design | $7,723,588 |
| 59 | Rule Joy Trammell + Rubio | $7,660,000 |
| 60 | DLA Architects | $7,061,360 |
| 61 | Emersion Design | $4,327,804 |
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