Y6

Y6 may refer to:

• LNER Class Y6, a class of British steam locomotives
• Neuropeptide Y receptor Y6, a human gene
• SJ Y6, a series of diesel railcar s operated by Statens Järnvägar (SJ) of Sweden
• Year 6, like in French Republican Calendar/Y6
• A Mazda diesel engines
• An honors Judaic Studies class at Hillel Yeshiva High School
• Batavia Air, IATA code Y6

Y-6 may refer to :

• The Chinese designation for the Ilyushin Il-14 aircraft.