The 20 Best Architecture Firms in the World Right Now

The best architecture firms in the world right now combine global reach with design influence. Gensler leads by revenue, while practices such as Foster + Partners, Zaha Hadid Architects, BIG, and Studio Gang shape skylines and set design direction across cultural, commercial, and residential work on every continent.

How Are the Best Architecture Firms Ranked?

There is no single scoreboard. Most credible lists weigh three things: annual revenue, the number of licensed architects on staff, and the reach and quality of completed projects. Revenue rankings, like the Architectural Record Top 300 and Building Design’s World Architecture 100, measure scale. Design recognition, through awards and built work, measures influence. The firms below earn their place on both counts.

If you want the pure scale picture, our breakdown of the largest architecture firms in the world ranks practices strictly by reported revenue. For a country-level view, see the leading firms in the United States.

Best Architecture Firms by Global Scale

These practices operate across dozens of offices and continents, handling airports, towers, and master plans at a volume few others can match.

1. Gensler

The largest architecture firm on the planet, employee-owned and operating from more than 50 locations. Its portfolio runs from the Shanghai Tower to JFK’s JetBlue terminal, and you can see its current work at gensler.com.

2. Arcadis

The Dutch design and engineering group sits second on the WA100 after absorbing IBI Group and CallisonRTKL. Its strength is integrated, sustainability-driven urban work at city scale.

3. HOK

A global practice built around its Living Design approach, which puts health and environmental performance at the center of every project. HOK also ranks among the leading healthcare-focused architecture firms worldwide.

4. Perkins&Will

A consistent number two in US revenue and one of the most credible names in sustainable design. Its research-led culture shapes hospitals, campuses, and corporate headquarters across the world.

5. Nikken Sekkei

Asia’s largest architecture practice, founded in Tokyo and home to more than 2,500 architects. It leads large, integrated projects across Japan, China, and the wider region.

6. SOM (Skidmore, Owings & Merrill)

The structural pioneers behind the Burj Khalifa and a century of defining skyscrapers. SOM pairs engineering depth with master planning at a scale almost no rival can carry.

Best Architectural Firms for Design Innovation

Scale is one measure. The studios below earn their reputation through ideas, built work, and the awards that follow.

7. Foster + Partners

The London high-tech practice behind Apple Park and a long line of precision-engineered landmarks. Its current portfolio sits at fosterandpartners.com.

8. Zaha Hadid Architects

Still the reference point for parametric, fluid form years after its founder’s death. The firm continues to deliver projects in the spirit of Zaha Hadid’s most iconic buildings, from Baku to Shenzhen.

9. BIG (Bjarke Ingels Group)

Copenhagen’s most exported idea: pragmatic utopianism, where playful concepts meet real performance. Projects like CopenHill and 8 House made the studio a household name in design circles.

10. OMA

Rem Koolhaas’s Rotterdam practice treats every brief as a research question. The CCTV Headquarters in Beijing remains one of the boldest structural statements of the century.

11. Herzog & de Meuron

The Swiss masters of material and surface, behind Tate Modern and Beijing’s Bird’s Nest stadium. Few firms move so freely between quiet craft and global spectacle.

12. Snohetta

The Oslo studio that treats landscape and building as one continuous idea, seen in the Oslo Opera House and the National September 11 Memorial Museum Pavilion. Its civic work is unusually generous with public space.

13. Heatherwick Studio

Thomas Heatherwick’s London practice blurs the line between architecture, sculpture, and product. Little Island in New York and Coal Drops Yard show its appetite for expressive, tactile structures.

14. MVRDV

Another Rotterdam force, known for data-driven, often provocative urbanism. Buildings like the Markthal and the Depot Boijmans turn density into spectacle.

15. Studio Gang

Founded by Jeanne Gang, the Chicago studio connects ecology, structure, and social context, from the rippling Aqua Tower to civic and cultural buildings. It ranks among the most celebrated women-led practices working today.

16. SANAA

Kazuyo Sejima and Ryue Nishizawa build with light, transparency, and almost weightless restraint. Both are Pritzker Prize laureates, and Sejima was again recognized among architecture’s leading figures in 2025.

17. Sou Fujimoto Architects

The Japanese studio behind some of the most quietly radical small buildings of the past decade, plus the 2013 Serpentine Pavilion. Fujimoto’s work reframes how soft, open structures can feel.

18. Renzo Piano Building Workshop

From the Centre Pompidou to The Shard, Piano has spent five decades proving that technical clarity and lightness can coexist. The workshop remains a benchmark for refined engineering.

19. Henning Larsen

The Danish practice known for daylight, timber, and Nordic environmental rigor. Cultural and civic projects across Scandinavia show its disciplined, sustainability-first approach.

20. Diller Scofidio + Renfro

The New York studio that helped redefine public space with the High Line and The Shed. Its hybrid of architecture, performance, and media keeps it on every serious shortlist.

Best Architecture Design Firms at a Glance

The table below summarizes where the leading global studios are based and what they are best known for.

Revenue and ranking figures reflect the most recent published data and shift each year as firms report new results.

Looking Ahead

The names at the top of these lists rarely change overnight, yet the criteria behind them are shifting fast. Climate performance, adaptive reuse, and digital fabrication now carry as much weight as the signature gesture once did. The firms that stay on this list a decade from now will be the ones treating sustainability as a design problem rather than a checkbox. For more on where the discipline is heading, our roundup of the best architectural websites for inspiration tracks the studios and ideas worth watching next.