Guilbert \gu(i)-lbe-rt, guil-bert\ as a boy's name is a variant of Gilbert (Old French), and the meaning of Guilbert is "bright promise".

The baby name Guilbert sounds like Culbert, Gilburt and Gilberto. Other similar baby names are Ailbert, Dilbert, Filbert, Philbert, Fulbert, Hulbert and Wilbert.