Euspondylus simonsii, known commonly as Simons's sun tegu, is a species of lizard in the family Gymnophthalmidae. The species is endemic to Peru.
The specific name, simonsii, is in honor of American scientific collector Perry O. Simons.
E. simonsii is found in the Department of Huánuco, Peru.
The preferred natural habitat of E. simonsii is at altitudes of .
E. simonsii is oviparous.