Company lists · Data refreshed September 2026

Top 25 Interface design firms worldwide

Name: Interface design firms worldwide
Creator: RevenueBase
License: https://creativecommons.org/licenses/by/4.0/

Compiled by the RevenueBase Data Team Data refreshed Sep 20, 2026 32,426 companies tracked

RevenueBase identified 32,426 interface design firms worldwide as of September 2026 and tracks 203,587 professional contacts across them, including 50,078 with verified work emails. The United States is the largest market and London the largest hub.

This list covers interface design firms worldwide, matched on what each company actually does as described in its own words. Ranked by team size, largest first. Every row shows the company's own description, its RevenueBase Smart Search rating, and when it was last checked. Data refreshed September 20, 2026. Country and city lists for interface design firms follow the table.

Published by RevenueBase, a B2B data infrastructure company. This list was built with RevenueBase Smart Search, the natural-language company search RevenueBase customers use to build their own targeted lists and unlock verified emails and direct dials at the companies on them. How these lists are built and judged.

How to read this list HQ checked on every row RevenueBase Smart Search rating on every row Refreshed Sep 20, 2026 86% judged on-target in blind review

32,426Companies

203,587Contacts tracked

50,078Verified emails

Explore this list → Free signup · no credit card · 500 free credits

The 25 largest interface design firms worldwide

Ranked by team size

Top 25 of 32,426 interface design firms worldwide, ranked by team size, largest first. Data refreshed Sep 20, 2026. RevenueBase Smart Search rates how each company's information relates to interface design firms: strong evidence (its own description names it), partial (names part of it), indirect (matched on the rest of its profile rather than the description shown). Click a contact count to view that company's people.
#	Company	RevenueBase Smart Search	Headquarters	Employees	Contacts
1	Smithgroup	Partial evidence	Detroit, MI, United StatesHQ checked Sep 20, 2026	1,001-5,000	1,849 contacts →
	Partial evidence “SmithGroup is an award-winning, multi-national integrated design firm that employs research, data, advanced technologies and design thinking to help clients solve their greatest…” Source: RevenueBase Database · checked Sep 20, 2026
2	Cannondesign	Partial evidence	New York, NY, United StatesHQ checked Sep 20, 2026	1,001-5,000	1,660 contacts →
	Partial evidence “CannonDesign is a different kind of design firm, where architecture, strategy, experience, innovation and social good converge to create meaningful impact.” Source: RevenueBase Database · checked Sep 20, 2026
3	IA Interior Architects	Partial evidence	San Francisco, CA, United StatesHQ checked Sep 20, 2026	501-1,000	1,584 contacts →
	Partial evidence “Celebrating 40 years of visionary design and innovation, IA Interior Architects is the first global architecture firm focused exclusively on interiors.” Source: RevenueBase Database · checked Sep 20, 2026
4	IDEA	Partial evidence	Sofia, BulgariaHQ checked Sep 20, 2026	n/a	1,583 contacts →
	Partial evidence “At IDEA International, we design spaces for people to work well, live happily, and rest with style.” Source: RevenueBase Database · checked Sep 20, 2026
5	HGA	Partial evidence	Minneapolis, MN, United StatesHQ checked Sep 20, 2026	1,001-5,000	1,543 contacts →
	Partial evidence “HGA is a national interdisciplinary design firm committed to making a positive, lasting impact for our clients and communities through research-based, holistic solutions.” Source: RevenueBase Database · checked Sep 20, 2026
6	IDEO	Partial evidence	San Francisco, CA, United StatesHQ checked Sep 20, 2026	201-500	1,208 contacts →
	Partial evidence “IDEO (pronounced “EYE-dee-oh”) is a global design consultancy helping the world’s most audacious dreamers create braver tomorrows.” Source: RevenueBase Database · checked Sep 20, 2026
7	Lollypop Design Studio	Partial evidence	San Jose, CA, United StatesHQ checked Sep 20, 2026	201-500	1,078 contacts →
	Partial evidence “We are a full-stack design-to-development solution provider, that helps enterprises build future-ready products.” Source: RevenueBase Database · checked Sep 20, 2026
8	Ware Malcomb	Partial evidence	International Design Firm, United StatesHQ checked Sep 20, 2026	501-1,000	992 contacts →
	Partial evidence “Established in 1972, Ware Malcomb is a dynamic, forward-thinking design firm offering streamlined architecture, interior design, branding, and engineering services across the…” Source: RevenueBase Database · checked Sep 20, 2026
9	NORR	Partial evidence	Toronto, ON, CanadaHQ checked Sep 20, 2026	501-1,000	907 contacts →
	Partial evidence “NORR is a global team of 750 architects, engineers, planners, and interior designers creating design strategies and solutions that express the unique vision of every project.” Source: RevenueBase Database · checked Sep 20, 2026
10	B H Architects	Partial evidence	Toronto, ON, CanadaHQ checked Sep 20, 2026	201-500	843 contacts →
	Partial evidence “B+H Architects is a global, award-winning firm with a 70+ year legacy of building creative solutions for clients through the delivery of architecture, interior design, landscape…” Source: RevenueBase Database · checked Sep 20, 2026
11	IBM IX Dach	Indirect evidence	Berlin, GermanyHQ checked Sep 20, 2026	501-1,000	819 contacts →
	Indirect evidence “We are IBM iX.” Source: RevenueBase Database · checked Sep 20, 2026
12	Smart Design	Partial evidence	Brooklyn, United StatesHQ checked Sep 20, 2026	n/a	814 contacts →
	Partial evidence “Smart Design is a strategic design company that helps people live better and work smarter.” Source: RevenueBase Database · checked Sep 20, 2026
13	Parkhill	Partial evidence	Lubbock, TX, United StatesHQ checked Sep 20, 2026	501-1,000	609 contacts →
	Partial evidence “We are a full-service design firm of extraordinary planners, designers, architects, and engineers.” Source: RevenueBase Database · checked Sep 20, 2026
14	Konrad	Partial evidence	New York, NY, United StatesHQ checked Sep 20, 2026	501-1,000	596 contacts →
	Partial evidence “Konrad is a global leader in AI and digital innovation consulting providing AI, strategy, design, and technology services to the world’s most ambitious businesses and brands.” Source: RevenueBase Database · checked Sep 20, 2026
15	Pininfarina	Indirect evidence	Cambiano, ItalyHQ checked Sep 20, 2026	501-1,000	552 contacts →
	Indirect evidence “Global icon of Italian style, Pininfarina is recognized for its unparalleled ability to create timeless beauty through its values of elegance, purity, and innovation.” Source: RevenueBase Database · checked Sep 20, 2026
16	Sasaki	Partial evidence	Boston, MA, United StatesHQ checked Sep 20, 2026	201-500	515 contacts →
	Partial evidence “For over seventy years, Sasaki has brought together the best of architecture, interior design, landscape architecture, planning, urban design, civil engineering, graphic design…” Source: RevenueBase Database · checked Sep 20, 2026
17	Padams Group	Indirect evidence	Mumbai, IndiaHQ checked Sep 20, 2026	5,001-10,000	481 contacts →
	Indirect evidence “We at Padam interiors believe that each project is as unique as each client.” Source: RevenueBase Database · checked Sep 20, 2026
18	TVS	Partial evidence	Atlanta, GA, United StatesHQ checked Sep 20, 2026	51-200	467 contacts →
	Partial evidence “TVS is an award-winning architecture and interior design firm headquartered in Atlanta, GA with global project expertise.” Source: RevenueBase Database · checked Sep 20, 2026
19	KTGY	Partial evidence	Irvine, CA, United StatesHQ checked Sep 20, 2026	201-500	461 contacts →
	Partial evidence “Design Lives at KTGY.” Source: RevenueBase Database · checked Sep 20, 2026
20	Fjord, Part Of Accenture Song	Partial evidence	London, United KingdomHQ checked Sep 20, 2026	1,001-5,000	391 contacts →
	Partial evidence “Fjord, part of Accenture Song, is a design and innovation consultancy that reimagines people’s relationships with the digital and physical world around them.” Source: RevenueBase Database · checked Sep 20, 2026
21	Estudio Architecture	Partial evidence	Houston, TX, United StatesHQ checked Sep 20, 2026	n/a	390 contacts →
	Partial evidence “eStudio is a specialized full service architectural and boutique design firm.” Source: RevenueBase Database · checked Sep 20, 2026
22	Kasian Architecture Interior Design And Planning	Partial evidence	Vancouver, BC, CanadaHQ checked Sep 20, 2026	201-500	357 contacts →
	Partial evidence “We use the power of design to create a better world.” Source: RevenueBase Database · checked Sep 20, 2026
23	ASD SKY	Partial evidence	Atlanta, GA, United StatesHQ checked Sep 20, 2026	201-500	344 contacts →
	Partial evidence “Established in 1963, ASD \| SKY has evolved into a multi-disciplinary design firm offering interiors, architectural, landscape, and graphic design services to a variety of…” Source: RevenueBase Database · checked Sep 20, 2026
24	Cooper Carry	Partial evidence	Atlanta, GA, United StatesHQ checked Sep 20, 2026	201-500	336 contacts →
	Partial evidence “Cooper Carry is a national architecture firm that brings an internationally recognized team of design professionals to the wide variety of project types we engage in, all united…” Source: RevenueBase Database · checked Sep 20, 2026
25	Hord Coplan Macht	Partial evidence	Baltimore, MD, United StatesHQ checked Sep 20, 2026	201-500	333 contacts →
	Partial evidence “Hord Coplan Macht is an integrated firm offering planning, architecture, landscape architecture, interior design and environmental graphic design with offices in Baltimore…” Source: RevenueBase Database · checked Sep 20, 2026

RevenueBase Smart Search

RevenueBase Smart Search assesses information from a company’s LinkedIn profile, information supplied directly by the company, its website, and other publicly available sources. It uses that information to rate how closely the company relates to this list’s category: interface design firms. Every row carries its rating and the description the rating was read from, so each one can be checked rather than taken on trust.

Strong evidence: The company's own public description of its business names interface design firms.
Partial evidence: Its own public description names part of interface design firms, so it works in or next to the category without describing itself that way.
Indirect evidence: The description shown does not name interface design firms. The match rests on the rest of the company's public profile rather than the one sentence quoted here, so this is the rating to check first.

RevenueBase Smart Search is how these lists are built: RevenueBase's data engine and AI assemble the companies that match a category defined in a user's own words, so a list can be about what companies actually do rather than about whichever industry code they were filed under.

Showing 25 of 32,426 interface design firms worldwide

See the full list, filter by size, metro and specialty, and get verified emails and direct dials for all 50,078 reachable decision-makers.

Free signup · no credit card

View the full list →

Interface design firms worldwide at a glance

As of Sep 20, 2026

24.6%Verified-email coverage

6.3Average contacts per company

1-10Median size (employees)

2.0%Largest-city concentration · London

Sep 20, 2026Page data refreshed

Companies by employee count

1-10

25,218

11-50

5,928

51-200

984

201-500

175

501-1,000

1,001-5,000

5,001-10,000

10001+

Email recency is reported on each country list linked below.

How this list was built

Company categories are rarely black and white. RevenueBase reads each company's own description of its business to decide whether it belongs among interface design firms, so some rows will be adjacent to the category rather than pure plays. The description and RevenueBase Smart Search rating on every row are there so you can check each match yourself.

Source: The RevenueBase company graph: 60 million companies and 398.9 million professional contacts resolved from primary sources, queried with RevenueBase Smart Search, the natural-language company search available to every RevenueBase user.
Coverage: Every country. Country and city lists for interface design firms are linked below.
What qualifies: Companies worldwide whose own description of what they do matches “interface design firms”. Matching reads each company's description, not its industry code or its name.
RevenueBase Smart Search: RevenueBase Smart Search is how this list is assembled and how each row is rated. RevenueBase's data engine and AI assess a company's LinkedIn profile, information supplied directly by the company, its website and other publicly available information, then relate it to a category defined in a user's own words. Each row is rated strong evidence (its own description names interface design firms), partial evidence (it names part of the category) or indirect evidence (the description shown names none of it and the match rests on the rest of the company's profile). The description supporting each rating is quoted on the row.
What we exclude: Companies whose own description does not clearly place them among interface design firms, and records with no verified work email.
Match quality: In blind human judging of this matching method, 86% of matched companies were on target. Expect roughly 1 in 7 rows to be adjacent to the category rather than a pure play. Every row shows the company's own description and its RevenueBase Smart Search rating so you can judge each match yourself. Read the full methodology: how the lists are built, how the judging worked, and what the figure means.
Ranking: Team size, largest first: companies are ordered by the number of professionals RevenueBase tracks at each one. Employee ranges shown are reported bands, for context.
Verification: Every listed company carries at least one verified work email, 50,078 across the full list. Contacts re-verify on a rolling cadence, and each contact's own verification date is shown inside RevenueBase.
Refresh: This page's figures were pulled from the company graph on September 20, 2026. Lists refresh periodically as the graph is re-checked.
Corrections: Wrong category, wrong headquarters, or a company that has closed? Use “Report an issue” on any row. Reports go to the RevenueBase Data Team and feed back into the company graph.

Interface design firms by location

136 lists · largest first

Every Interface design firms list RevenueBase publishes, by country and city. Counts are matching companies in each list as of its own refresh date.

Countries

Cities

Frequently asked

What is RevenueBase Smart Search?

RevenueBase Smart Search is how RevenueBase decides which companies belong on this list and how strongly each one fits. Its data engine and AI assess a company's LinkedIn profile, information supplied directly by the company, its website and other publicly available information, then relate it to the category the list is about. Each row is rated strong evidence when the company's own description names interface design firms, partial evidence when it names part of the category, and indirect evidence when the description shown names none of it and the match rests on the rest of the company's profile.

How many interface design firms are there worldwide?

RevenueBase identified 32,426 interface design firms worldwide as of September 2026, matched on each company's own description of what it does rather than its industry code.

What is the largest company on this list?

Smithgroup, headquartered in Detroit, tops this list with the largest team on record.

Which country has the most interface design firms?

The United States leads with 6,414 companies, followed by India (3,377) and the United Kingdom (1,511). Every interface design firms list by country and city is linked on this page.

Which city has the most interface design firms?

London leads with 652 headquartered companies, followed by New York (469) and Los Angeles (278).

How do I get contact information for these companies?

A free RevenueBase account lets you run this exact search and work the top results, verified emails and direct dials included. Upgrading unlocks all 50,078 verified decision-maker contacts tracked across these 32,426 companies.

How current is this list?

The list refreshes periodically as the company graph is re-checked. This page's figures were pulled on September 20, 2026.

Ready to reach these companies? Verified emails and direct dials for all 32,426 interface design firms worldwide. Start with a free account, no credit card.

Download this list →

Related lists

Browse the directory

About this data

RevenueBase is a B2B data infrastructure company. Its company graph covers 60 million companies and 398.9 million professional contacts, with emails verified on a rolling cadence rather than scraped once and left to decay. These company lists are generated directly from that graph with RevenueBase Smart Search, the same natural-language company search every RevenueBase user has: describe a market in plain words, get the companies that match, and add verified emails and direct dials for the people at them. It is the same data that powers RevenueBase's B2B data products, and a free account includes 500 credits to start. How these lists are built and judged.