无柱兰属（学名：Amitostigma）是兰科下的一个属，为陆生兰。该属共有23种，主要分布于东亚及其邻近地区。

Amitostigma is a genus in the orchid family (Orchidaceae). It is an exclusively Asian genus of 28 orchids, growing in the alpine habitats of China, Japan, Korea, Vietnam, Thailand and the Kuril Islands. Twenty two species of this genus grow in China.