Biard is a surname. Notable people with the surname include:
François-Auguste Biard (1799–1882), French painter Henri Biard, director of the French counterintelligence and domestic intelligence service from 1972 to 1974 James R. Biard (born 1931), American engineer and inventor Pierre Biard (disambiguation), several people Tex Biard (1912–2009), American translator (Japanese) and cryptographer