Richard Mann Allan (June 22, 1923 – September 6, 1999) was an American actor. He was best known for his appearances with Susan Hayward in With a Song in My Heart(1952), Ava Gardner in The Snows of Kilimanjaro (1952), and Marilyn Monroe in Niagara (1953).   Richard Mann Allan was born on June 22, 1923, in Jacksonville, Illinois, as the youngest child and son of the four children of Edna Mann (1893–1973), a dietitian, and Robert Howard Allan (1895–1958), a farmer.  He had two brothers, Edward and Robert Howard Allan Jr. (1922–2009), and a sister, Catherine Allan. Allan attended dancing class from the age of seven.   In the late 1950s Allan played in various German productions.

Richard Allan  died in Louisville, Kentucky, due to lung cancer at the age of 76. He was buried at Gillham Cemetery in 1999.