Marilu \m(a)-ri-lu\ as a girl's name is a variant of Mari (Welsh). See for meaning of Marilu.

The baby name Marilu sounds like Marilou and Marylu. Other similar baby names are Maris, Marin, Marcile, Marcila, Marilda, Marit, Marita, Marilee, Maria, Marika, Marie, Mariah, Marian, Marion, Mariam, Marien, Mariel, Marilla, Mariet, Mariela, Marial, Marike, Mariko, Marilis, Marilyn, Marilin, Marinn, Marina, Marine, Marise, Marisa, Mariza, Marla, Marlo, Marylou, Marice, Merill and Maryl.