| Rank | Company | 2012 Data Center Revenue ($) |
| 1 | Corgan | $27,534,191 |
| 2 | Gensler | $23,330,000 |
| 3 | HDR Architecture | $16,295,000 |
| 4 | Integrated Design Group | $14,598,910 |
| 5 | PageSoutherlandPage | $14,450,000 |
| 6 | Reynolds, Smith and Hills | $4,360,000 |
| 7 | Callison | $3,973,699 |
| 8 | Little | $3,655,590 |
| 9 | RTKL Associates | $3,634,000 |
| 10 | EwingCole | $3,000,000 |
| 11 | Heery International | $1,043,000 |
| 12 | HLW International | $1,000,000 |
| 12 | Westlake Reed Leskosky | $1,000,000 |
| 14 | PGAL | $980,000 |
| 15 | Environetics | $948,678 |
| 16 | SMMA | Symmes Maini & McKee Associates | $770,000 |
| 17 | Gresham, Smith and Partners | $700,167 |
| 18 | Kirksey Architecture | $634,576 |
| 19 | Ware Malcomb | $626,000 |
| 20 | IBI Group | $597,893 |
| 21 | Albert Kahn Family of Companies | $506,503 |
| 22 | Solomon Cordwell Buenz | $500,000 |
| 23 | NELSON | $408,322 |
| 24 | Emersion Design | $333,229 |
| 25 | Harley Ellis Devereaux | $285,000 |
| 26 | DJM Architecture | $277,900 |
| 27 | Rule Joy Trammell + Rubio | $250,000 |
| 28 | JRS Architect | $200,000 |
| 29 | CTA Architects Engineers | $151,300 |
| 30 | KZF Design | $143,691 |
| 31 | VOA Associates | $135,000 |
| 32 | BBS Architects, Landscape Architects and Engineers | $130,000 |
| 33 | Harvard Jolly Architecture | $125,000 |
| 34 | Wight & Co. | $106,600 |
| 35 | HOK | $98,000 |
| 36 | Nadel | $25,000 |
| 37 | RSP Architects | $21,000 |
Read the Data Center Giants article
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