Elizabeth Alexandra Morton Breese Tilton (August 19, 1883 – January 15, 1964) was an American philanthropist, based on Long Island, New York.

[1] Her father was a West Point graduate from Virginia, who became a lawyer in New York and founder of the Shinnecock Hills Golf Club on Long Island.

[2] After her second divorce, Morton resumed her birth name, moved into her parents' property, and donated almost two hundred acres on Long Island to the United States Fish and Wildlife Service in the mid-1950s.

[6] She donated additional land to the Nature Conservancy in 1957, which became part of the Wolf Swamp Reserve.

[12] Elizabeth Alexandra Morton died in 1964, aged 80 years, in Southampton.