Lu \lu\ as a girl's name is a variant of Lou, Louise (Old German), Lucy (Latin) and Luella (Old English), and the meaning of Lu is "famous warrior; light".

The baby name Lu sounds like Lee, La-, Lia and Lea. Other similar baby names are Luz, Al, To, Bo, Di, El, Lusa, Liz, Lib, Fe, Io, Jo, Lil, Lin, Lyn, Liv, Lyz, Lura, Lulu, Lula, Luba, Luci, Luce, Luna, Lupe, Mo, Rue, Rui, Sue, Thu and Vi.