May Heatherly (born Mary Gay Prindle; May 13, 1942 – October 6, 2015) was an American actress who worked primarily in Spain.

Her film credits include The Cups of San Sebastian (1967), Open Season (1974), From Hell to Victory (1979), Pieces (1982), and Edge of the Axe (1988).

[2] In the early 1960s, Heatherly began working in Spain as an actress, appearing in the films Ella y el miedo (1962), Los muertos no perdonan (1963), and Torrejón City (1964).

[5] Heatherly returned to the United States in later 1964 to appear in a recurring guest role as Heather McNabb on The Man from U.N.C.L.E..[4] She subsequently appeared in the Spanish-based production The Cups of San Sebastian (1967) alongside Tab Hunter, followed by a small role in the American drama film Love and Pain and the Whole Damn Thing (1973) directed by Alan J. Pakula and starring Maggie Smith.

[6] Heatherly also had roles in the European-based thrillers The Killer Is One of 13 (1973) and The Student Connection (1974), followed by Open Season (1974), which starred Peter Fonda and William Holden.