Billard is a French surname. Notable people with the surname include:
Armand Billard, French diver Aude Billard (born 1971), Swiss physicist Bobbi Billard (born 1975), American professional wrestler, actress and model Brian Billard, Australian politician Charles-Michel Billard (1800–1832), French physician Claude Billard (1550–1618), French writer, poet and playwright Émile Billard (1852–1930), French sailor Frederick C. Billard (1873–1932), American military officer Irène Billard (born 1984), French electronic music producer Joël Billard (born 1953), French politician John Leander Billard (1842–1924), American businessman Juliette Billard (1889–1975), French architect, watercolorist and designer Lani Billard (born 1979), Canadian actress, drummer and singer Lynne Billard (born 1943), Australian statistician Martine Billard (born 1952), French politician (1653–1726), French writer of religious essays (1921–2012), French screenwriter, actor and director Pierre Billard (1922–2016), French journalist and film critic