A fuel supply apparatus includes a filler neck that is configured to provide a fuel passage communicating with a filler port, and a breather port that is protruded from the filler neck to be connected with a breather pipe. At least part of a valve that is configured to allow for recirculation of the air from the breather piped to the fuel passage is placed inside of the breather port. This allows for downsizing of the configuration in the vicinity of the breather port in the filler neck.