PT3 or variant may refer to: temporary designation of minor planet Consolidated PT-3, a 1930s USAAC primary trainer aircraft PT-3, a World War II US Navy PT-boat. Prison Tycoon 3: Lockdown (2007 videogame) PT3, a Para triathlon classification PT3 Pentaksiran Tingkatan Tiga (or Form Three Assessment) exam, successor of Malaysian Penilaian Menengah Rendah

See also Part three (disambiguation)