Water monitor is a common name for the Asian water monitor, a lizard species in South and Southeast Asia.
Water monitor may also refer to:
All monitor lizard species of the subgenus Soterosaurus, with the exception of the black rough-necked monitor.
Nile monitor, a lizard species in Africa Water monitor or fire monitor, alternative names for deluge gun, a large firefighting device Mertens' water monitor, lizard species in Australia Mitchell's water monitor, lizard species in Australia