Haunted Valley is a fifteen episode American adventure film serial starring Ruth Roland, in which Ruth Ranger, the president of an engineering firm engaged in a construction project at the Lost River Dam, takes out a three-month million-dollar loan from supposed friend Harry Mallinson with the "Haunted Valley" as collateral. It is unknown if the film currently survives.
The serial consisted of fifteen episodes, released from May 6, 1923 to August 12, 1923.