| Top 75 international design firms | | |
| | Company | Billings ($) |
| 1 | Jacobs | 1,031,493,280 |
| 2 | Arup | 580,800,000 |
| 3 | AECOM Technology Corp. | 571,761,000 |
| 4 | HOK | 330,880,000 |
| 5 | Parsons Brinckerhoff | 250,980,000 |
| 6 | Skidmore, Owings & Merrill | 221,560,000 |
| 7 | Gensler | 186,075,000 |
| 8 | Stantec | 172,172,000 |
| 9 | CH2M HILL | 124,640,000 |
| 10 | Kohn Pedersen Fox Associates | 110,960,000 |
| 11 | WATG | 93,146,760 |
| 12 | RMJM | 90,992,697 |
| 13 | Burt Hill | 85,392,000 |
| 14 | Perkins+Will | 80,000,000 |
| 15 | Ingenium Group | 71,100,000 |
| 16 | RTKL Associates | 65,498,232 |
| 17 | HDR Architecture | 61,092,000 |
| 18 | Callison | 55,500,000 |
| 19 | Arquitectonica | 48,672,000 |
| 20 | Fluor Corp. | 48,077,400 |
| 21 | tvsdesign | 31,950,000 |
| 22 | Thornton Tomasetti | 30,167,195 |
| 23 | NBBJ | 29,861,700 |
| 24 | Cannon Design | 26,961,000 |
| 25 | Ellerbe Becket | 26,035,249 |
| 26 | HKS | 24,047,300 |
| 27 | Perkins Eastman | 21,400,000 |
| 28 | Jerde Partnership, The | 20,090,000 |
| 29 | Rutherford & Chekene | 17,236,000 |
| 30 | URS Corp. | 16,800,000 |
| 31 | Smallwood, Reynolds, Stewart, Stewart & Associates | 16,563,300 |
| 32 | KlingStubbins | 14,880,000 |
| 33 | PageSoutherlandPage | 13,918,500 |
| 34 | Day & Zimmermann International | 11,867,250 |
| 35 | MulvannyG2 Architecture | 10,200,000 |
| 36 | Stanley Consultants | 10,125,000 |
| 37 | R.G. Vanderweil Engineers | 9,920,970 |
| 38 | TRO Jung/Brannen | 9,695,000 |
| 39 | BBG-BBGM | 9,430,000 |
| 40 | Cubellis | 9,300,000 |
| 41 | Sasaki Associates | 9,285,000 |
| 42 | FXFOWLE Architects | 8,740,000 |
| 43 | SSOE | 8,648,000 |
| 44 | Swanke Hayden Connell Architects | 8,500,000 |
| 45 | Burns & McDonnell | 8,464,000 |
| 46 | KMD Architects | 8,200,000 |
| 47 | Rolf Jensen & Associates | 7,581,150 |
| 48 | Environmental Systems Design | 7,560,000 |
| 49 | Anshen+Allen | 6,635,284 |
| 50 | Clark, Richardson & Biskup Consulting Engineers | 6,442,560 |
| 51 | Leo A Daly | 6,392,451 |
| 52 | X-nth | 6,231,935 |
| 53 | M+W Zander | 6,105,000 |
| 54 | DeStefano and Partners | 6,020,000 |
| 55 | Syska Hennessy Group | 5,780,000 |
| 56 | Cambridge Seven Associates | 5,350,000 |
| 57 | Affiliated Engineers | 5,275,690 |
| 58 | Epstein | 5,250,000 |
| 59 | Schirmer Engineering Corp. | 4,948,383 |
| 60 | FRCH Design Worldwide | 4,680,000 |
| 61 | RNL Design | 4,608,000 |
| 62 | M-E Engineers | 4,470,000 |
| 63 | Merrick & Co. | 4,320,000 |
| 64 | Weidlinger Associates | 4,100,000 |
| 65 | HLW International | 3,700,000 |
| 66 | Baker and Associates | 3,600,000 |
| 67 | Zimmer Gunsul Frasca Architects | 3,242,800 |
| 68 | Magnusson Klemencic Associates | 3,200,000 |
| 69 | VOA Associates | 3,060,000 |
| 70 | Ware Malcomb | 3,053,411 |
| 71 | OWP/P | 3,018,000 |
| 72 | KMD Architects | 2,680,000 |
| 73 | Rosser International | 2,625,000 |
| 74 | Walker Parking Consultants | 2,603,119 |
| 75 | Walter P Moore | 2,582,891 |
| Source: 2009 Giants 300 survey. For more Giants 300 rankings, visit www.BDCnetwork.com/Giants |
