Robert Herbert Mize Sr. (February 10, 1870 – April 1, 1956) was an American prelate of the Episcopal Church who was the third Missionary Bishop of Salina between 1921 and 1938.
He studied at St Stephen's College in New York City, graduating with a Bachelor of Arts in 1894.
One of his children was Bob Mize who was the Bishop of Damaraland, of what is the present day Namibia.
[2] Mize was ordained deacon on June 10, 1897, and priest on December 17, 1897, on both occasions by Bishop Frank Rosebrook Millspaugh of Kansas.
He was active in the Diocese of Kansas, was a member of the standing committee, and served as deputy to each general convention between 1910 and 1920.