Gill may be a surname or given name, derived from a number of unrelated sources;in English, Gill may be a hypocorism of a number of given names, including Giles, Julian, William (Guillaume), Gillian, etc. the Dutch form of the given namen Giles in Northern English, Scots and Norwegian, it may be a topographic name, ultimately derived from Old Norse gil "ravine"; c.f. Lord Gill as a surname, an anglicization of the Scottish or Irish patronymic McGill in Hebrew, a masculine given name or byname meaning "joy, gladness" in Punjabi, a common last name in Punjab.