Gilbert \gi-lbe-rt, gil-bert\ as a boy's name is pronounced GIL-bert. It is of Old French origin, and the meaning of Gilbert is "bright promise". Gilberto is a Spanish form. Author Gilbert Chesterton.

Gilbert has 13 variant forms: Bert, Bertie, Burt, Gib, Gibb, Gil, Gilberto, Gilburt, Gill, Giselbert, Giselberto, Giselbertus and Guilbert.

Baby names that sound like Gilbert are Calbert, Colbert and Culbert.