Top 20 Architectural Firms (2025)
Ranked by number of fee-earning architects (WA100 2025). Logos are scaled to 120×32.
#1Gensler
United States • ≈2,746 architects
Global leader in workplace, mixed-use, aviation & commercial interiors.
#2Arcadis
Netherlands • ≈1,887 architects
Large multidisciplinary platform (incl. Arcadis IBI) with strong urban & infrastructure design.
#3HDR
United States • ≈1,698 architects
Healthcare, civic & transportation with deep engineering integration.
#4AECOM
United States • ≈1,554 architects
Mega-scale infrastructure, sports, and transportation hubs worldwide.
#5Nikken Sekkei
Japan • ≈1,370 architects
Transit-oriented urbanism, supertall/mixed-use & high-performance campuses.
#6Sweco Group
Sweden • ≈1,342 architects
Nordic sustainability focus; large municipal & infrastructure portfolio.
#7Heerim Architects & Planners
South Korea • ≈900 architects
Complex mixed-use, aviation & civic work across Asia and MENA.
#8Perkins&Will
United States • ≈885 architects
Research-led design, healthcare & education; global sustainability leadership.
#9DLR Group
United States • ≈830 architects
K-12/University, courts & civic; strong net-zero and adaptive-reuse work.
#10Perkins Eastman
United States • ≈801 architects
Senior living, hospitality & large urban mixed-use expertise.
#11Haeahn Architecture
South Korea • ≈788 architects
High-density residential & TODs; large domestic and regional footprint.
#12HKS
United States • ≈752 architects
Healthcare, hospitality & sports venues with advanced performance analysis.
#13CannonDesign
United States • ≈750 architects
Healthcare, science & education; strategy + design delivery model.
#14Aedas
China/Hong Kong • ≈749 architects
Transit, retail & tall-building specialists across APAC & Middle East.
#15ATP architects engineers
Austria • ≈682 architects
Integrated A-E delivery with strong industrial & logistics portfolio.
#16Tianhua
China • ≈616 architects
Residential & urban regeneration at scale in major Chinese cities.
#17SJ Group (Surbana Jurong)
Singapore • ≈604 architects
Urban planning to delivery across ASEAN, Africa & the Middle East.
#18 (tie)Stantec
Canada • ≈581 architects
Community-focused AE consultancy; healthcare, education & civic.
#18 (tie)gmp · von Gerkan, Marg & Partners
Germany • ≈581 architects
Airports, stadiums & cultural projects with rigorous tectonics.
#20HPP Architekten
Germany • ≈555 architects
Corporate campuses, sports & complex refurbishments across Europe/Asia.
Source & method: Rankings and headcounts from Building Design’s WA100 2025, which orders firms by the number of fee-earning architects worldwide. See WA100 coverage and the 2025 big-list table.