6Y

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