| Rank | Company | 2013 Data Center Revenue |
| 1 | Gensler | $25,839,736 |
| 2 | Corgan | 23,560,060 |
| 3 | HDR | 15,150,000 |
| 4 | Page | 13,950,000 |
| 5 | Sheehan Partners | 5,666,072 |
| 6 | Little | 5,450,648 |
| 7 | RS&H | 4,900,000 |
| 8 | Callison | 3,940,188 |
| 9 | Clark Nexsen | 3,186,054 |
| 10 | Environetics | 2,947,119 |
| 11 | HOK | 1,971,352 |
| 12 | KZF Design | 1,699,307 |
| 13 | Symmes Maini & McKee Associates | 1,260,000 |
| 14 | Harvard Jolly Architecture | 1,143,578 |
| 15 | Schrader Group Architecture | 1,098,519 |
| 16 | Solomon Cordwell Buenz | 1,000,000 |
| 17 | Hammel, Green and Abrahamson | 757,874 |
| 18 | EwingCole | 625,000 |
| 19 | Heery International | 589,726 |
| 20 | Nelson | 394,035 |
| 21 | JRS Architect | 275,000 |
| 22 | Ware Malcomb | 262,000 |
| 23 | Gresham, Smith and Partners | 118,000 |
| 24 | Stantec | 80,826 |
| 25 | Becker Morgan Group | 75,482 |
| 26 | Perkins+will | 52,924 |
| 27 | Hoffmann Architects | 48,000 |
| 28 | RSP Architects | 43,000 |
| 29 | HNTB Corp. | 37,281 |
| 30 | Nadel | 30,000 |
| 31 | Lord Aeck Sargent | 24,238 |
Read the Data Center Giants article
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