Moody Tank Conservation Park is a protected area located in the Australian state of South Australia on the Eyre Peninsula about 26 kilometres (16 miles) north-east of Cummins.

Moody Tank Conservation Park contains four major vegetation communities, one of which (Eucalyptus peninsularis, E. leptophylla and E. pileata open mallee) is listed as threatened in South Australia.

The park also protects numerous plant species of conservation significance and provides suitable habitat for the nationally vulnerable Granite Mudwort (Limosella granitica).The conservation park is located in the locality of Ungarra and be accessed from its south side by a road named Yeelana Road which connects to the Lincoln Highway in the east and the Tod Highway in the west.

[2][4] The conservation park includes the Moody Rocks Water Tank (also known as the Moody Reservoir) which is listed on the South Australian Heritage Register and is the feature from which the conservation park's name is derived.

[5][2][4] The conservation park is classified as an IUCN Category III protected area.