PT6 or PT-6 may refer to: Pratt & Whitney Canada PT6, a popular turboprop aircraft engine Cunningham-Hall PT-6, an American six-seat cabin biplane aircraft of the 1920s Nanchang PT-6, export version of the Chinese Nanchang CJ-6 basic trainer aircraft Consolidated PT-6, a variant of a two-seat trainer and sports plane of the 1920s and 1930s USS PT-6, a pre-World War II PT-boat, see PT boat#History