Tryblis is a genus of fungi in the family Odontotremataceae. It has two species. The genus was circumscribed in 1931 by Frederic Clements, with T. arnoldii assigned as the type species; this was originally described as Blitridium arnoldii by Heinrich Rehm in 1872. Tryblis signata was added to the genus in 1997 by Martin Magnes.