缘毛红豆（学名：Ormosia howii）为豆科红豆属下的一个种。

Ormosia howii, the Hainan ormosia, is a species of legume in the Fabaceae family native to southern China. It was initially found on Diaoluo Shan, Hainan Island in 1954 and then in Yangchun, Guangdong in 1957, both times in extremely small populations. The species is now apparently extinct. It was a small tree, 10 metres (33 ft) high, growing in open forests on mountain slopes.