Ototriton is an extinct genus of rhineurid amphisbaenian or worm lizard from the Early Eocene of the western United States, including the type and only species Ototriton solidus.

[1] Unlike salamanders and like other rhineurids, Ototriton has a shovel-shaped snout that it presumably used for burrowing underground.

In 1928, paleontologist Charles W. Gilmore assigned a vertebra from the Bridger Formation of Wyoming, first classified as Glyptosaurus anceps, to Ototriton based on its large size, but later attributed it to the snake Lestophis crassus.

In 1945, Gilmore and G. I. Jepsen named a new species of Ototriton, O. minor, on the basis of another skull from the Wind River Formation, distinguishing it from O. solidus on the basis of its smaller size.

The most recent study to consider the specimen places it in the species Protorhineura hatcherii.