Suevoleviathan is an extinct genus of ichthyosaur, found in the Early Jurassic, Toarcian, of Holzmaden, Germany. The genus was named in 1998 by Michael Maisch. The generic name means "Swabian Leviathan". The type species is Leptopterygius disinteger Huene 1926. Ichthyosaurus integer Bronn 1844 was by Maisch renamed Suevoleviathan integer. Suevoleviathan was about four metres long.