8J or 8-J can refer to:
8J, IATA code for UTair Express 8J, code for Greater Albany Public School District 8J powertrain, a feature of the Audi TT F-8J, a model of Vought F-8 Crusader Y-8J, a model of Shaanxi Y-8 8J, shed code for Allerton TMD 8JE740, code for J&J Hunt Submerged Archaeological Site
See also J8 (disambiguation)