The green-backed trogon (Trogon viridis), also known as the Amazonian white-tailed trogon, is a near passerine bird in the trogon family. It is found in tropical humid forests in South America, where its range includes the Amazon, the Guiana Shield, Trinidad, and the Atlantic Forest in eastern Brazil. It formerly included T. chionurusof the Chocó region as a subspecies, but under the common name white-tailed trogon (a name now reserved for T. chionurus).