Boris Konstantinovich Zaytsev (Russian: ????´? ?????????´????? ??´????; 10 February 1881 – 22 January 1972) was a Russian prose writer and dramatist, and a member of the Moscow literary group Sreda.
Operated a Studio in the Rue du Faubourg Saint-Jacques, Paris from 1911 untill 1933. In 1933 he transfered his prints to his appartment on the nearby Rue Fustel de Coulanges, the rest of his photographs sold to Rapp agency, which later sold it to Roger-Viollet.
Last portraitist of Auguste Rodin (1840–1917) with an overall contribution of 295 photos of the artist and his work. First photographer for the museum devoted to the sculptor.