The genus name Acanthidium may refer to:

  • Animalia:
    • Acanthidium Lowe, 1839 = synonym of Etmopterus Rafinesque, 1810 (Chondrichthyes, Etmopteridae)
    • Acanthidium Montrouzier, 1858, junior homonym = replaced by Acanthidiellum Kirkaldy, 1904 = synonym of Polycarmes Stål, 1867 (Hemiptera, Pentatomidae)
    • Acanthidium Michener & Griswold, 1994, junior homonym = replaced by Acedanthidium Michener, 2000 (Hymenoptera, Megachilidae)