To provide an interior lighting apparatus for a vehicle that facilitates fixing of a bus bar to a housing.

The interior lighting apparatus includes:switch connecting terminals 44 for electrically connecting A bus bar 23 with a switch 22; roof harness connecting terminals 45 for electrically connecting with a roof harness wired in the ceiling inside a vehicle cabin; and crimp terminal parts 46 that connects each electric wire at an intermediate part between the switch connecting terminals 44 and the roof harness connecting terminals 45 by crimping. The apparatus is configured to store the bus bar 23 into a housing 21 in the following manner. The switch connecting terminals 44 of the bus bar 23 are arranged to be exposed to a clearance 39 for the switch of the housing 21. The roof harness connecting terminals 45 of the bus bar 23 are arranged so as to be exposed to a connector clearance 49 for roof W/H connection of the housing 21. The crimp terminal parts 46 of the bus bar 23 are arranged so as to be exposed to the inside of a clearance 50 for electric wire holders of the housing 21. The bus bar and the housing are engaged and fixed to each other with engaging protrusions 47 provided on a bus bar holder 24 and engaging recesses provided in the housing.