Gillroy \gi-ll-roy\ as a boy's name is a variant of Gilroy (Irish, Gaelic), and the meaning of Gillroy is "son of the red-head".

The baby name Gillroy sounds like Gillray and Gilray. Other similar baby names are Gildroy, Gillby, Gillbey, Gilley, Gillon, Gillion, Gilleon, Gildray and Gilderoy.