| Rank 2021 | Rank 2020 | New | Practice name | Country | Architects employed | Fee income (US$) |
|---|---|---|---|---|---|---|
| 1 | 1 | Gensler | US | 2506 | $1-1.5bn | |
| 2 | 2 | Nikken Sekkei | Japan | 1960 | $500-599m | |
| 3 | 4 | HDR | US | 1470 | $400-499m | |
| 4 | 5 | Sweco | Sweden | 1300 | $2-2.5bn | |
| 5 | 6 | IBI Group | Canada | 847 | $290-299m (2019) | |
| 6 | 7 | Aedas | China | 778 | $240-249m | |
| 7 | 9 | Perkins & Will | US | 774 | $600-699m | |
| 8 | 10 | Perkins Eastman | US | 762 | $260-269m | |
| 9 | 8 | HKS | US | 724 | $260-269m | |
| 10 | 12 | Heerim Architects & Planners | South Korea | 660 | $170-179m | |
| 11 | 11 | DLR Group | US | 656 | $280-289m | |
| 12 | 13 | CannonDesign | US | 640 | $170-179m | |
| 13 | 16 | Haeahn Architecture | South Korea | 622 | $100-109m | |
| 14 | 19 | ATP Architects Engineers | Austria | 575 | $130-139m | |
| 15 | 17 | Stantec | Canada | 562 | $350-359m | |
| 16 | 15 | SmithGroup | US | 549 | $210-219m | |
| 17 | 14 | DP Architects | Singapore | 544 | ||
| 18 | 18 | Nihon Sekkei | Japan | 535 | $170-179m | |
| 19 | 28 | Arcplus Group | China | 516 | $600-699m | |
| 20 | 29 | NBBJ | US | 510 | $210-219m | |
| 21 | 65 | CCDI Group | China | 487 | $400-499m | |
| 22 | 21 | HOK | US | 480 | $270-279m | |
| 23 | 23 | ZGF Architects | US | 468 | $130-139m | |
| 24 | 26 | HPP Architekten | Germany | 458 | $60-69m | |
| 25 | 27 | Foster + Partners | UK | 456 | $220-229m | |
| 26 | 22 | White Arkitekter | Sweden | 442 | $70-79m | |
| 27 | 30 | Kume Sekkei | Japan | 426 | $120-129m | |
| 28 | 20 | GMP Architekten | Germany | 406 | $90-99m | |
| 29 | 25 | RSP | Singapore | 397 | $50-59m | |
| 30 | 31 | Mitsubishi Jisho Sekkei | Japan | 382 | $170-179m | |
| 31 | 36 | LWK & Partners | China | 364 | $90-99m | |
| 32 | 24 | BDP | UK | 363 | $90-99m | |
| 33 | 34 | P&T Group | China | 346 | $110-119m | |
| 34 | 33 | Link Arkitektur | Norway | 343 | $70-79m | |
| 35 | 35 | DLN Architects | China | 329 | ||
| 36 | 37 | Kunwon | South Korea | 311 | $110-119m | |
| 37 | 39 | Allford Hall Monaghan Morris | UK | 295 | $60-69m | |
| 38 | 43 | Idom | Spain | 273 | $50-59m | |
| 39 | =45 | Aidea | Philippines | 267 | $5-9m | |
| 40 | 42 | Dewan Architects + Engineers | UAE | 266 | $50-59m | |
| 41 | 47 | PBK | US | 264 | $110-119m | |
| 42 | 41 | Chapman Taylor | UK | 261 | $40-49m | |
| 43 | =45 | Lemay | Canada | 250 | $80-89m | |
| 44 | 32 | ASYA | Philippines | 243 | $10-19m | |
| 45 | 50 | AXS Satow | Japan | 241 | $80-89m | |
| 46 | 52 | Bates Smart | Australia | 239 | $40-49m | |
| 47 | 53 | Leigh & Orange | China | 233 | $60-69m | |
| 48 | 59 | GHDWoodhead | Australia | 228 | $70-79m | |
| 49 | 55 | DSP Design Associates | India | 221 | $20-29m | |
| 50 | =48 | KEO International Consultants | Kuwait | 216 | $160-169m | |
| =51 | 54 | Corgan Associates | US | 211 | $130-139m | |
| =51 | - | New | Shanghai Tianhua | China | 211 | $270-279m |
| 53 | - | New | Lead8 | China | 209 | $40-49m |
| =54 | =63 | Aukett Swanke | UK | 206 | $30-39m | |
| =54 | 75 | Henning Larsen | Denmark | 206 | $50-59m | |
| 56 | =60 | Wilmotte & Associés | France | 200 | $50-59m | |
| 57 | 56 | Wong Tung & Partners | China | 198 | $50-59m | |
| 58 | 44 | Ronald Lu & Partners | China | 194 | $40-49m | |
| =59 | 62 | Archetype Group | Vietnam | 190 | $20-29m | |
| =59 | 58 | B+H Architects | Canada | 190 | $40-49m | |
| =59 | 70 | Page | US | 190 | $220-229m | |
| 62 | 67 | Nordic - Office of Architecture | Norway | 187 | $30-39m | |
| 63 | 69 | Jaspers-Eyers Architects | Belgium | 185 | $20-29m | |
| 64 | 66 | Sheppard Robson | UK | 184 | $30-39m | |
| 65 | =63 | Allies and Morrison | UK | 180 | $30-39m | |
| 66 | 76 | CF Møller Architects | Denmark | 177 | $50-59m | |
| 67 | 68 | Valode & Pistre | France | 173 | $30-39m | |
| 68 | 71 | Itten + Brechbühl | Switzerland | 171 | $50-59m | |
| 69 | =60 | Broadway Malyan | UK | 162 | $40-49m | |
| 70 | 74 | 10 Design | China | 158 | $30-39m | |
| 71 | 72 | Visionarch | Philippines | 152 | $5-9m | |
| 72 | 77 | UNStudio | Netherlands | 151 | $30-39m | |
| 73 | =80 | Morphogenesis | India | 145 | $5-9m | |
| =74 | - | New | Schneider + Schumacher | Germany | 135 | $20-29m |
| =74 | 84 | Sikka Associates | India | 135 | Under $5m | |
| 76 | - | New | Ho & Partners | China | 134 | $30-39m |
| 77 | =86 | EPR Architects | UK | 129 | $20-29m | |
| 78 | =80 | CP Kukreja Architects | India | 128 | Under $5m | |
| 79 | 97 | Gulf Consult | Kuwait | 119 | $30-39m | |
| 80 | =92 | Squire and Partners | UK | 117 | $20-29m | |
| 81 | 78 | SSH | Bahrain | 116 | $60-69m | |
| 82 | 89 | Feilden Clegg Bradley Studios | UK | 115 | $10-19m | |
| 83 | - | New | PRP | UK | 114 | $20-29m |
| 84 | 88 | Leo A Daly | US | 112 | $90-99m | |
| 85 | 82 | GF & Partners | Philippines | 111 | Under $5m | |
| 86 | =48 | Architectus | Australia | 110 | $60-69m | |
| =87 | 94 | Saraiva + Associados | Portugal | 106 | $20-29m | |
| =87 | 85 | Scott Brownrigg | UK | 106 | $10-19m | |
| 89 | 91 | Diamond Schmitt Architects | Canada | 105 | $30-39m | |
| =90 | 90 | AHR | UK | 103 | $10-19m | |
| =90 | - | New | Saota | South Africa | 103 | $10-19m |
| 92 | - | New | GVA | Mexico | 95 | |
| 93 | 79 | Progetto CMR | Italy | 94 | $20-29m | |
| 94 | 95 | Hames Sharley | Australia | 87 | $10-19m | |
| 95 | - | New | Mode Design | Australia | 86 | $30-39m |
| 96 | - | New | GK Archi | Vietnam | 75 | |
| 97 | - | New | Richez Associés | France | 74 | $10-19m |
| 98 | =98 | Boogertman + Partners | South Africa | 71 | $5-9m | |
| 99 | =98 | Warren and Mahoney | New Zealand | 70 | $30-39m | |
| 100 | - | New | WTA Architecture and Design Studio | Philippines | 69 | Under $5m |
WA100 2021: The big list
View a table of this year’s top 100 architects
WA100 is Building Design’s annual survey of the world’s largest practices ranked by the number of fee-earning architects they employ.