5J or 5-J may refer to:
Cebu Pacific (IATA code), a Philippine low-cost airline 5J engines, a product of Škoda Fabia Secondary State Highway 5J, former name for Washington State Route 702 Destiny of the Daleks (production code: 5J), a 1979 Doctor Who serial Antimonumento 5J, a sculpture in Guadalajara, Mexico
See also Q-5J, a model of Nanchang Q-5 BD-5J, a model of Bede BD-5 Martin SV-5J, a model of Martin Marietta X-24 J5 (disambiguation)