Trionyx is a genus of softshell turtles belonging to the family Trionychidae.

The list of species follows a 2017 review of the Trionychidae by Georgios L. Georgalis and Walter G.

[2] The following species are considered valid trionychid taxa, but with uncertain phylogenetic relationships.

They are only referred to Trionyx provisionally due to its historic status as a wastebasket taxon.

[2] The species from North America follow a 2015 review by Natasha S. Vitek and Walter G. Joyce[3] and the species from Europe and Asia follow the 2017 review by Georgalis and Joyce.