Semecarpus is a genus of plants in the family Anacardiaceae. It includes 87 species native to the Indian subcontinent, Indochina, Malesia, Taiwan, Papuasia, Queensland, and the South Pacific.

Semecarpus australiensis, commonly known as the tar tree, native cashew, marking nut, or cedar plum, is a species of tree in the cashew and mango family Anacardiaceae, native to parts of Melanesia and