Phrynobatrachus rouxi is a species of frog in the family Phrynobatrachidae.

[1][2] It is found on western shore of Lake Victoria in Uganda and on Mount Kenya in Kenya;[2] the extent of the former part of the range is uncertain and the latter requires confirmation.

[1][2] The specific name rouxi honours Jean Roux, a Swiss zoologist and herpetologist.

[3] Common names Roux's river frog and Roux's puddle frog have been proposed for this species.

[2] There is little specific information on ecology of this species, and even its distribution is unclear.