Gwendolyn is a feminine given name, a variant of Gwendolen. The name is of Welsh origin, meaning white, fair, blessed, and holy, while the spelling "Gwendolen" means ring or bow. The name is nine letters long and contains three syllables. The name Gwendolyn is often confused with or incorrectly pronounced as an alternately spelled version of the name "Gwendoline." The name Gwendoline (Gwen-do-line) is pronounced phonetically. Notable people with the name include:
Gwendoline Maud Syrie Barnardo (1879–1955), a British interior decorator
Gwendoline Butler (born 1922), an English writer of mystery fiction
Gwendoline Christie (born 1978), a British actress
Gwendoline Davies (1882–1951), a Welsh patron of the arts
Gwendoline Didier (born 1986), a French figure skater
Gwendoline Eastlake-Smith (1883–1941), a British tennis player
Gwendoline "Gwen" Harwood (1920–1995), an Australian poet
Gwendoline Malegwale Ramokgopa, mayor of the City of Tshwane Metropolitan Municipality, South Africa
Gwendoline Porter (born 1909), a British athlete
Gwendoline Riley (born 1979), an English writer
Gwendoline Yeo (born 1977), a Singaporean-American actress and musician