William Larimer Mellon Sr.

William Larimer Mellon Sr.
Mellon before a congressional committee
in October 1924
Chairman of the Republican State Committee of Pennsylvania
In office
June 15, 1926  May 12, 1928
Preceded byHarry Baker
Succeeded byEdward Martin
Personal details
Born(1868-06-01)June 1, 1868
Pittsburgh, Pennsylvania
DiedOctober 9, 1949(1949-10-09) (aged 81)
Pittsburgh, Pennsylvania
Political partyRepublican
SpouseMary Hill Taylor
ChildrenMatthew Taylor Mellon I
Rachel Mellon Walton
Margaret Mellon Hitchcock
William Larimer Mellon Jr.
OccupationBusinessman

William Larimer Mellon Sr. (June 1, 1868 – October 9, 1949), sometimes referred to as W. L., was an American businessman who was active in Republican Party politics. A co-founder of Gulf Oil, he was a member of the prominent Mellon family of Pittsburgh, Pennsylvania.

According to The Miami News, "Politically, Mellon was known as the 'field marshal' for the Mellon political forces in the days preceding the New Deal.