Pierre Guillemin (14 June 1886 – 18 August 1915) was a French rugby union player, who represented France, Paris and Racing Club de France (RCF). He was first selected to play for France in the Home Nations Championship of 1908, playing in the games against England and Wales. The following year, he played against England and Ireland, and in 1910, in all four Home Nations games. That year, he scored his only points for France, a try, against England in a close-fought match, after which he gained a reputation for being amongst the best of the French forwards.