Willa \wi(l)-la\ as a girl's name is pronounced WIL-ah. It is of Old German origin, and the meaning of Willa is "will helmet, protection". Feminine form of William.
Baby names that sound like Willa are Willy, Ailli, Aila, Alla, Ella, Eila, Illa, Jill, Jilly, Jilli, Olla, Yulla, Ulla, Wally, Willie and Willow. Other similar baby names are Dilla, Billa, Milla, Cilla, Lilla, Rilla, Wilma, Wilda, Willda, Wilna, Willma and Zilla.