Christopher Wolfgang Alexander (born October 4, 1936 in Vienna, Austria) is an architect noted for his theories about design and for more than 200 building projects in California, Japan, Mexico, and around the world.

Donald Appleyard (July 26, 1928 – September 23, 1982) was an urban designer and theorist, teaching at the University of California, Berkeley.

Edmund Norwood Bacon (May 2, 1910 – October 14, 2005) was a noted American urban planner, architect, educator and author.

Jennifer Bradley is the founding director of the new Aspen Institute Center for Urban Innovation. The mission of the Center is to identify new, different and better ways to solve problems in urban areas.

Amanda Jay Mortimer Burden (born 1944) is a Principal at Bloomberg Associates, an international consulting service founded by Michael Bloomberg as a philanthropic venture to help city governments improve the quality of life of their citizens.

Dan Burden has spent most of his life helping the world get “back on its feet.” In 2014, the White House recognized Dan as a Champion of Change for his efforts to make places more walkable.

Peter Calthorpe (born 1949) is a San Francisco-based architect, urban designer and planner.

Robert Allan Caro (born October 30, 1935) is an American journalist and author known for his celebrated biographies of Robert Moses and Lyndon B. Johnson.

Majora Carter is an urban revitalization strategy consultant, real estate developer, and Peabody Award winning broadcaster.

Mikael Colville-Andersen (born January 29, 1968 in Fort McMurray, Alberta, Canada) is a Danish-Canadian urban designer and urban mobility expert.

Patrick Condon (born in Brockton, Massachusetts in 1950) is a notable Canadian urban designer, planner, and professor. He is the author of several planning books in the field of sustainability and public engagement.

Andrés Duany (born September 7, 1949) is an American architect, urban planner, and a founder of the Congress for the New Urbanism.

Ellen Dunham-Jones is an award-winning architect and professor, teaching contemporary architectural, urban design, and theory.

Alan Ehrenhalt served for 19 years as executive editor of Governing Magazine, and is currently one of its contributing editors.

Rodolphe el-Khoury is Canada Research Chair in Architecture and Urban Design at the University of Toronto and partner in the design firm Khoury Levit Fong.

Douglas Lynn Farr is an American architect and urban planner.

Leigh Gallagher has been the Assistant Managing Editor at Fortune since 2007.

Chicago-based artist Theaster Gates has developed an expanded practice that includes space development, object making, performance and critical engagement with many publics

Jan Gehl (born 17 September 1936) is a Danish architect and urban design consultant based in Copenhagen and whose career has focused on improving the quality of urban life by re-orienting city design towards the pedestrian and cyclist.

Ryan Gravel is an urban thinker, designer, speaker, and author – an entrepreneur developing opportunities at Sixpitch, Aftercar, Generator, and Threefold.

Taras Grescoe is a Canadian non-fiction writer who won the Writers’ Trust Non-Fiction Prize in 2008 for his book Bottomfeeder: How to Eat Ethically in a World of Vanishing Seafood.

Ben Hamilton-Baillie (born 1955) is an urban designer and movement specialist, described as "the leading international expert on the development of “Shared Space”.

Writer, historian, urbanist, Leo Hollis was born in London in 1972.

Jane Jacobs (born Jane Butzner May 4, 1916 – April 25, 2006) was an American-Canadian journalist, author, and activist best known for her influence on urban studies.

Working on his own or with others, Seitu Jones has created over 30 large scale public artworks, including work for three stations along the new Greenline LRT in St. Paul, MInnesota.

Bruce J. Katz is a vice president at the Brookings Institution and founding director of the Brookings Metropolitan Policy Program.

Jennifer Keesmaat is the Chief Planner of the City of Toronto in Canada, and a former urban design consultant.

Gabe is the former Commissioner of the Chicago and Washington DC Departments of Transportation. In both cities he revamped technology platforms and government processes while focusing on putting people first vs. automobiles on city streets.

Léon Krier (born 7 April 1946 in Luxembourg) is an architect, architectural theorist and urban planner.

Kent Larson is Director of the Changing Places research group and co-directs the City Science Initiative at the MIT Media Lab.

Edward Mazria is an internationally recognized architect, author, researcher, and educator.

William McDonough is a globally recognized leader in sustainable development. An architect, designer, thought leader and advisor, Mr. McDonough’s interests and influence range widely and he works at all scales.

Joseph Minicozzi, AICP is the principal of Urban3, LLC, a consulting company of downtown Asheville real estate developer Public Interest Projects.

Enrico Moretti is Professor of Economics at the University of California, Berkeley where he holds the Michael Peevey and Donald Vial Career Development Chair in Labor Economics.

Aaron Naparstek is the founder and former editor-in-chief of Streetsblog.

Peter Norton is a historian of engineering and society, with particular interests in streets and people. He is an associate professor in the Department of Engineering and Society, where he has taught since 1998.

A designer, urbanist, and social innovator, Liz is an expert on sustainable design and spatial innovation in challenged urban environments globally.

David Owen (born February 14, 1955) is an American journalist and author who writes frequently for The New Yorker.

Enrique Peñalosa Londoño (born September 30, 1954) is a Colombian politician. He was mayor of Bogotá, from 1998 until 2001, and was runner-up in 2007.

Gil Penalosa is passionate about cities for all people. He is the former Commissioner of Parks, Sport and Recreation for the City of Bogota, Colombia and is the Founder and Chair of the Board of 8-80 Cities.

Jason Roberts is the founder of the Oak Cliff Transit Authority, originator of the Better Block Project, co-founder of the Art Conspiracy and Bike Friendly Oak Cliff, and recent candidate for US Congress.

Janette Sadik-Khan was the Commissioner of the New York City Department of Transportation from 2007-2013, appointed by New York City Mayor Michael Bloomberg.

Tony Seba is an author, a serial Silicon Valley entrepreneur, and an instructor in Entrepreneurship, Disruption and Clean Energy at Stanford’s Continuing Studies Program.

With her partners at MASS, Marika co-founded an architectural nonprofit dedicated to designing well-built environments that aid in the reduction of global poverty

Donald Curran Shoup (born August 24, 1938) is a professor at the University of California, Los Angeles and widely-regarded expert in the economics and availability of parking.

Daniel Solomon (born December 11, 1939), architect, urban designer, professor, and author, is one of the co-founders of the Congress of the New Urbanism.

Jeff Tumlin is an expert in helping communities move from discord to agreement about the future.

William Hollingsworth "Holly" Whyte (October 1, 1917 — January 12, 1999) was an American urbanist, organizational analyst, journalist, and people-watcher.