Alva Belmont (Alva Ertskin Smith Vanderbilt Belmont, née Alva Ertskin Smith, also called (1875–96) Alva Vanderbilt) was a wealthy American socialite and an outspoken suffragette.

This portrait of Belmont was taken by the Stadler Photographing Company in 1911.

Courtesy of the United States Library of Congress, Prints and Photographs Division.