Stewart Orr Gardner† (31 October 1878 – 12 April 1931) was a Scottish-American professional golfer who played in the late 19th and early 20th century. He had seven top-10 finishes in the U.S. Open. His best performance was a T2 finish in the 1902 U.S. Open. In 1924 he served as vice president at large of the PGA of America.