Billie

Billie is a given name most commonly used for females in English-speaking countries. It originated as a diminutive form of William (via Bill) and later gained independent usage as a given name. The name is also used as a formal given name in some cases, and there are notable people who are known simply as Billie or whose birth names include Billie as a first or middle name. While primarily female, Billie has occasionally appeared as a gender-neutral or male name in various contexts, though this usage is less common.

Notable people with Billie as a given name include the American singer Billie Eilish (born 2001), the jazz legend Billie Holiday (1915–1959), tennis player Billie Jean King (born 1943), actress Billie Burke (1884–1970), English actress and singer Billie Piper (born 1982), actress Billie Lourd (born 1992), and English singer-songwriter Billie Marten (born 1999). The name has appeared in various cultural works and remains in use today as a friendly, approachable given name.