Lawrence Gilbert "Larry" Gagosian (born April 19, 1945) is an American art dealer who owns the Gagosian Gallery chain of art galleries, with three locations in New York City (on Madison Avenue, West 24th St. and 21st St.), two locations in London (on Britannia and Davies Streets), one location in Los Angeles expanded in 2010 by architect Richard Meier (in Beverly Hills), one in Rome and one in Athens. In 2010, two more branch galleries were opened in Paris and Geneva. A Hong Kong gallery location opened in 2011. Working in concert with collectors including Douglas Cramer, Eli Broad and Keith Barish he developed a reputation for knowing how to push prices upwards as well as for staging museum quality exhibitions.

In 2011, the British magazine ArtReview placed Gagosian fourth in their annual poll of "most powerful person in the art world".

Among the artists and estates currently represented by Gagosian are Joseph George, Richard Artschwager, Cecily Brown, Chris Burden, Francesco Clemente, John Currin, Walter de Maria, Bob Dylan, Ellen Gallagher, Douglas Gordon, Damien Hirst, Howard Hodgkin, Neil Jenney, Mike Kelley, Anselm Kiefer, Maya Lin, Vera Lutter, Anselm Reyle, Yayoi Kusama, Edward Ruscha, Jenny Saville, Richard Serra, David Smith, Philip Taaffe, Mark Tansey, Robert Therrien, Cy Twombly, Andy Warhol, Jeff Koons and Richard Wright. He also represents the Alberto Giacometti estate in the United States.