The Vivian Beaumont Theater is a Broadway theater in the Lincoln Center complex at 150 West 65th Street on the Upper West Side of Manhattan in New York City, New York, U.S. Operated by the nonprofit Lincoln Center Theater (LCT), the Beaumont is the only Broadway theater outside the Theater District that surrounds Times Square. Named after heiress and actress Vivian Beaumont Allen, the theater was one of the last structures designed by modernist architect Eero Saarinen. Broadway scenic designer Jo Mielziner oversaw the design of the interior. The theater shares a building with the New York Public Library for the Performing Arts and contains two off-Broadway venues, the Mitzi E. Newhouse Theater and the Claire Tow Theater.
The Beaumont occupies the southern and western sides of its building's first and second floors, while the library wraps above and on top of it. The main facade faces Lincoln Center's plaza and is made of glass and steel, with a travertine attic above. The main auditorium has approximately 1,080 seats across two levels, arranged in a steeply sloped semicircular layout. The Beaumont differs from traditional Broadway theaters because of its use of a flexible stage, which could be extended with a thrust stage of varying length. The layout led to complaints about inferior sightlines and acoustics in the theater's early years. The 299-seat Mitzi E. Newhouse Theater is in the basement and the 112-seat Claire Tow Theater is on the roof.