Megathous is a genus of click beetles in the family Elateridae.

It was originally established by Edmund Reitter as a subgenus of the genus Harminius Fairmaire, 1851.

[1] There are more than 10 described species in Megathous, found in the Palearctic.

[2][3] These species belong to the genus Megathous:[4] The following 3 species were transferred to the genus Hemicrepidius by Frank E. Etzler [species] in 2020.

[5]