Rhomphaiodon is an extinct genus of prehistoric sharks in the order Synechodontiformes that has been found in Late Triassic and Early Jurassic deposits located in Europe.

[1] The type species R. minor was originally named as a species of Hybodus in 1837 by Louis Agassiz.

[2] A second species, R. nicolensis, was added when the genus was named in 1993.

[3] Fossils of Rhomphaiodon have been found in:[4]