Broadnax is a surname. Notable people with the surname include:
Donald Broadnax (born 1961), American serial killer on Alabama's death row Horace Broadnax (born 1964), the head men's basketball coach at Savannah State University Jamie Broadnax (born 1980), American film critic, podcaster, writer Jerry Broadnax (born 1951), American professional footballer Johnny Broadnax (1904–1986), American college football player and coach Lydia Broadnax (1742–1820), American free Black woman, businesswoman, former slave Morris Broadnax (1931–2009), Motown songwriter Robert Broadnax Glenn (1854–1920), Democratic governor of the U.S. state of North Carolina 1905–1909 Rodriquez Broadnax (born 1994), stage name Jacquees, American singer and songwriter Walter Broadnax (1944–2022), American educator Willmer "Little Ax" Broadnax, (1916–1994), African-American hard gospel quartet singer/songwriter
See also Robert Broadnax Glenn (1854–1920), American lawyer, prosecuting attorney, U.S. Attorney, politician