Iophon is een geslacht van sponsdieren uit de klasse van de Demospongiae (gewone sponzen).
Soorten Iophon abnormale Ridley & Dendy, 1886 Iophon aceratum Hentschel, 1914 Iophon bipocillum Aguilar-Camacho, Carballo & Cruz-Barraza, 2014 Iophon cheliferum Ridley & Dendy, 1886 Iophon chilense Desqueyroux-Faúndez & van Soest, 1996 Iophon cylindricum Ridley & Dendy, 1886 Iophon dogieli Koltun, 1955 Iophon dubium (Hansen, 1885) Iophon flabellodigitatum Kirkpatrick, 1907 Iophon frigidum Lundbeck, 1909 Iophon funis Topsent, 1892 Iophon gaussi Hentschel, 1914 Iophon hesperidesi Rios, Cristobo & Urgorri, 2004 Iophon husvikense Goodwin, Brewin & Brickle, 2012 Iophon hyndmani (Bowerbank, 1858) Iophon indentatus Wilson, 1904 Iophon laevistylus Dendy, 1924 Iophon lamella Wilson, 1904 Iophon laminale Ridley & Dendy, 1886 Iophon minor (Brøndsted, 1924) Iophon nigricans (Bowerbank, 1858) Iophon omnivorus Ridley & Dendy, 1887 Iophon ostiamagna Wilson, 1904 Iophon piceum (Vosmaer, 1882) Iophon pictoni Goodwin, Jones, Neely & Brickle, 2011 Iophon pluricorne Topsent, 1913 Iophon pommeraniae Thiele, 1903 Iophon proximum (Ridley, 1881) Iophon radiatum Topsent, 1901 Iophon rayae (Bakus, 1966) Iophon semispinosum Bergquist, 1961 Iophon spinulentum (Bowerbank, 1866) Iophon terranovae Calcinai & Pansini, 2000 Iophon timidum Desqueyroux-Faúndez & van Soest, 1996 Iophon tubiforme Desqueyroux-Faúndez & van Soest, 1996 Iophon unicorne Topsent, 1907 Iophon variopocillatum Alander, 1942