Horneman is a surname. Notable people with the surname include:
C. F. E. Horneman (1840–1906), Danish composer, conductor, music publisher, and music instructor Charly Nouck Horneman (born 2004), Danish footballer Christian Horneman (1765–1844), Danish painter Christian Hersleb Horneman (1781–1860), Norwegian jurist and elected official Emil Horneman (1809–1870), Danish composer