A light source apparatus that can be assembled and disassembled easily. A light source apparatus 100 includes: a body 120 housing a light-emitting module 110; and a front cover 130 attached to an opening portion 121 of the body 120 and including a light emission window 131 for allowing light emitted from the light-emitting module 110 to go outside. The opening portion 121 is provided on a front side of the body 120. The front cover 130 includes a plurality of engaging claws 134a through 134f and is attached to the body 120 when the engaging claws 134a through 134f engage with a claw receiving portion 124 provided in an outer surface of the body 120.
