Pseudoxanthus is a genus of leaf beetles in the subfamily Eumolpinae.

[2] It contains only one species, Pseudoxanthus snizeki, described by Stefano Zoia in 2010.

[1] The generic name is a combination of pseudo- (false) and -xanthus (blonde).

The latter is from the second half of "Dermoxanthus", the name of a closely related genus.

The species is named after Miroslav Snížek, who collected the majority of the specimens studied.