Rip Roaring Riley is a 1935 American action film directed by Elmer Clifton and starring Elmer Clifton, with Lloyd Hughes, Marion Burns and Grant Withers.

[1] The film's sets were designed by the art director Vin Taylor.

A second feature, it was released in America by Puritan Pictures and in Britain by Pathé Pictures under the alternative title The Mystery of Diamond Island.

A federal agent manages to crash land on Diamond Island, where the government suspects that Major Gray is developing a new poison gas, by forcing Professor Baker and his daughter Anne to work for him.

This article about an action film is a stub.