Olga Grey (born Anushka Zacsek or Anna Zacsek, November 10, 1896 – April 25, 1973) was an American silent film actress, sometimes billed with the alternate spelling of her last name, Olga Gray. She was known for Intolerance (1916), A Bold Impersonation (1915) and His Lesson (1915).

She later became an attorney under her original name, Anna Zacsek. In 1942 she was one of the defense attorneys in the "Sleepy Lagoon" trials, defending gang members Henry Leyvas, Victor Segobia, and Edward Grandpré. She was the only woman attorney in the courtroom for these trials.