Mount Mary (formerly Krichauff and Beatty) is a small town on the Thiele Highway between Eudunda and Morgan in South Australia.

Despite the town's name, the terrain is essentially flat, and is believed to have been a corruption of Mound Mary.

[11] Mount Mary still has a hotel serving the community and travellers, but little other business remains other than farming.

The town contains ten homes, the pub, and a working telephone box.

[12] Mount Mary is located within the federal division of Barker, the state electoral district of Chaffey and the local government area of the Mid Murray Council.