酒石酸锑钾（英语：Antimony potassium tartrate），又称酒石酸氧锑钾（英语：Potassium antimonyl tartrate），俗称吐酒石（英语：Tartar emetic或Emetic tartar），化学式为K₂Sb₂(C₄H₂O₆)₂，为酒石酸的锑钾复盐。酒石酸锑钾自古以来一直被用作一种强效的催吐剂；除此之外，它还曾被用于治疗血吸虫病和利什曼病。

Antimony potassium tartrate, also known as potassium antimonyl tartrate, potassium antimontarterate, or emetic tartar, has the formula K₂Sb₂(C₄H₂O₆)₂ and is the double salt of potassium and antimony of tartaric acid. The compound has long been known as a powerful emetic, and was used in the treatment of schistosomiasis and leishmaniasis.