Leith \le(i)-th\ as a girl's name (also used as boy's name Leith), is of Scottish and Gaelic origin, and the meaning of Leith is "broad river". The variant spelling Lethe, is the river of forgetfulness in Greek mythology.

Leith has 2 variant forms: Leithe and Lethe.

Baby names that sound like Leith are Leitha, Letty, Lita, Ledah, Leta, Leida, Leota, Leeta, Letha, Leithia and Letta.