Landolin Ohmacht (11 November 1760 – March 31, 1834) was a German sculptor.
Ohmacht was born in Dunningen. Among other things, he created busts of Susette Gontard and Erwin von Steinbach (see Walhalla temple) and a monument to Jean-Frédéric Oberlin in the Saint Thomas Church (Strasbourg). He died in Strasbourg.