Billie is a gender-neutral name and is of German origin. It can be used for both girls and boys. It means willing to protect. As a unisex name, this name is popular with both boys and girls. The name is currently in the top 1000 of U.S birth chart of the year 2021 and not in the top 1000 of NameChef Most Popular Baby Names.
Billie can be used for both boys and girls.