Obj or OBJ may refer to:
Entities Ottawa Business Journal, a weekly business publication in Ottawa, Ontario, Canada
People Odell Beckham Jr. (born 1992), American football player, nicknamed OBJ Olusegun Obasanjo (born 1937), 5th and 12th President of Nigeria, nicknamed OBJ
Software OBJ (programming language), a programming language family developed in 1976, including OBJ2 and OBJ3 , a replacement character used in computing
Files With the .obj file extension: Object file, an organized machine code file created by a compiler Relocatable Object Module Format, an Object file for Intel microprocessors COFF, the object file format on 32-bit and 64-bit Windows Wavefront .obj file, a 3D geometry definition file format