Mundulla is a town in eastern South Australia. The town is located in the Tatiara District Council local government area, 278 kilometres (173 mi) south east of the state capital, Adelaide. The name of the town is derived from the Aboriginal work mantala meaning "place of thunder", referring to a rumbling sound made when trampling on the earth as a result of the many caves in the area. The Council enquired about the spelling in 1965 and the Postmaster General proposed to change it to Mundalla in 1972, but this was not approved by the Geographical Names Board.
At the 2006 census, Mundulla and the large surrounding area had a population of 1,042.
The Mundulla school opened in 1878. An Australian rules football club, Mundulla Football Club, compete in the Kowree Naracoorte Tatiara Football League.