Wilhelmina \wi-lhelmi-na, wilhe(l)-mina\ as a girl's name is of Old German origin, and the meaning of Wilhelmina is "will helmet, protection". The second element of the source phrase literally refers to a helmet. Actress Billie Burke; author Willa Cather.

Wilhelmina has 54 variant forms: Billa, Billee, Billey, Billie, Billy, Ellma, Elma, Guglielma, Guillelmina, Guillelmine, Guillema, Guillemette, Guillemine, Helma, Helmina, Felmine, Helminette, Min, Mina, Minna, Minnie, Minny, Valma, Velma, Vilhelmina, Villhelmina, Villhelmine, Vilma, Wileen, Willene, Wilhelmine, Willa, Willabella, Willabelle, Willamina, Willamine, Willeen, Willene, Willemina, Willetta, Willette, Williamina, Willie, Williebelle, Wilmette, Willmina, Willmine, Willy, Willybella, Wilma, Wilmette, Wilmina, Wilna and Wylma.

For more information, see also related names Elmina, Hilma, Twyla and Wilmot.

A baby name that sounds like Wilhelmina is Vilhelmine.