Sphenophryne similis is a species of frog in the family Microhylidae. It is endemic to New Guinea and is only known from its type locality in the Owen Stanley Range, Northern Province, Papua New Guinea. Sphenophryne similis is known from leaf litter on the forest floor in lower montane forest at an elevation of above sea level. It was relatively common. There are no known threats facing it. References similis Amphibians of New Guinea Amphibians of Papua New Guinea Endemic fauna of New Guinea Endemic fauna of Papua New Guinea Amphibians described in 2000 Taxa named by Richard G. Zweifel Taxonomy articles created by Polbot