A filler pipe includes a retainer capable of retaining a fuel filler gun inserted through a fuel filler opening, and a pipe main body connecting the retainer and a fuel tank. The retainer has a stopper limiting the insertion of the fuel filler gun. A flow guide that guides the flow of fuel is provided on the downstream side of the stopper with respect to the flow direction of fuel supplied from the fuel filler gun. The flow guide has a guide portion extending at an angle with respect to the flow direction of fuel.