6Y or 6-Y may refer to:
6 years 6Y, the call sign prefix for radio stations in Jamaica 6Y, Aircraft registration for Jamaica 6Y, the IATA airline code for the Latvian company SmartLynx Airlines 6Y, a model of Škoda Fabia engine 6Y, the production code for the 1985 Doctor Who serial Timelash
See also Y6 (disambiguation)