Olga Petrova born May 10, 1884 - died November 30, 1977, was an actress, screenwriter and playwright.

Born Muriel Harding in Tur Brook , England, she moved to the United States where she became a star of vaudeville using the stage name Olga Petrova. She was cast in her first silent film in 1912, a Russian production titled Ukhod velikovo startza (Departure of a Grand Old Man). She went on to appear in a number of films for Solax Studios and was Metro Pictures first diva, usually given the role of a femme fatale. During her seven years in film, Petrova appeared in more than two dozen films and wrote the script for several others.

Petrova left the film industry in 1918 but continued to act in Broadway productions. During the 1920s, she wrote three plays and toured the country with a theater troop. In 1942, she published her autobiography, Butter With My Bread.

Olga Petrova died in 1977 in Clearwater, Florida.