William Prunier (born 14 August 1967) is a French former footballer who played as a centre-back position, and is assistant manager of Le Mans FC. Prunier spent most of his playing days in France, primarily with Auxerre where he spent nine years, but also played for clubs in England, Denmark, Scotland, Italy, Belgium and Qatar, where he finished his career. He also represented France, gaining his only cap in 1992.