粉口兰属（学名：Pachystoma）是兰科下的一个属，为陆生兰。该属共有11种，分布于热带亚洲至大洋洲。

Pachystoma is a genus of orchids (family Orchidaceae). The genus has three currently recognized species (as of June 2014), distributed across the Himalayas, China, Southeast Asia, northern Australia, New Guinea and New Caledonia.