To provide a lighting system for vehicle directing light emitted from a light source in a predetermined direction.

The lighting system 20 for vehicle for lighting an arm rest 14 disposed on a vehicle door trim 10 has the light source 50 disposed above the arm rest 14 and having a light emission face 62E emitting light toward the arm rest 14, and a light guide part 70 disposed to cover the lower part of the light emission face 62E and directing the light emitted from the light emission face 62E toward the arm rest 14 toward the vehicle front part.