血桐属（学名：Macaranga）是大戟科下的一个属，为灌木或乔木植物。该属共有280种以上，分布于东半球热带地区。

Macaranga is a large genus of Old World tropical trees of the family Euphorbiaceae and the only genus in the subtribe Macaranginae. Native to Africa, Australasia, Asia and various islands of the Indian and Pacific Oceans, the genus comprises over 300 different species. It was first described as a genus in 1806, based on specimens collected on the Island of Mauritius.