Gail \gail\ as a boy's name (also used as girl's name Gail), is a variant of Gale (Irish, Gaelic, Old English), and the meaning of Gail is "foreigner; cheerful, happy". See also Gael.

The baby name Gail sounds like Kail, Gal, Gaile, Gaill, Gall and Gil. Other similar baby names are Bail, Gair, Galil, Sail and Vail.