The Rev. Mark Hill Mullin, 37, Episcopal minister and one-time collegiate track star, has been named the new headmaster of St. Albans School for Boys here, according to Rear Adm. Frank C. Jones (USN-Ret.), chairman of the school's governing board.

Mullin will succeed Canon Charles Martin, who is retiring this summer after 28 years as headmaster. St. Albans, under the aegis of the Washington Cathedral, enrolls about 520 boys in grades 4 through 12.

Mullin currently is assistant headmaster of Blue Ridge School in Dyke, Va. near Charlottesville. From 1968 through June, 1976, he was chaplain and then a form dean and academin adviser at Choate School in Wallingford, Conn.

Bron in Chicago, Mullin was graduated from Mt. Carroll High School. He earned bachelor of arts degrees at Harvard College and Oxford University in England, which he attended as a Marshall scholar. He also holds a master of arts degree from Oxford and a master of divinity degree from General Theological Seminary. He was ordained in 1968.

While a Harvard undergraduate, Mullin was captain of both the cross-country and track teams and received the Bingham Award as the outstanding athlete of his class. He coached cross-country and track at Choate.