Tumbarumba Shire was a local government area in the eastern Riverina region, located in the foothills of the Snowy Mountains, on the upper reaches of the Murray River in New South Wales, Australia. It came into existence in 1906. Prior to this the area covered by the shire was unincorporated. It included the town of Tumbarumba and the small towns of Rosewood, Tooma, Khancoban and Jingellic.