Tarnma is a locality in the Mid North region of South Australia, between Marrabel and Eudunda, South Australia, crossed by the Curio Road, part of route B84.

The area of Tarnma was known as Friedrichswalde until "names of enemy origin" were changed in 1918.

[2] Tarnma has a cemetery and previously had two Lutheran churches, all on Frederick Road.

Hermann Büring, of the winemaking firm of Bûring & Sobels, was associated with Friedrichswalde.

This South Australia geography article is a stub.