RESIN PEDAL ARM

Provided is a resin pedal arm of which strength is further improved. A resin pedal arm includes a hollow arm body . The arm body includes a front wall portion , a rear wall portion facing the front wall portion , a left wall portion formed between left edges A, A of the front wall portion and the rear wall portion and having multiple first flat plate portions arranged to bridge between the left edges A, A, and a right wall portion formed between right edges B, B of the front wall portion and the rear wall portion , having multiple second flat plate portions arranged to bridge between the right edges B, B, and facing the left wall portion . The multiple second flat plate portions are each present in multiple left opening areas S each provided between adjacent ones of the multiple first flat plate portions , as viewed in a direction in which the left wall portion and the right wall portion face each other.