Scaphoid stress fracture is rare and occurs mainly in gymnasts. The current literature has only two reported cases: unilateral scaphoid stress fracture in a platform diver and bilateral scaphoid stress fracture in a gymnast. We herein report bilateral stress fracture of the scaphoid in a platform diver who presented with only one symptomatic side. Our patient was a 16-year-old competitive platform diver with an 18-month history of pain in the right wrist. Radiography revealed fracture of the right scaphoid at the waist. As part of our preoperative plan of measuring the scaphoid length to determine the appropriate screw, radiography of the contralateral side was performed, revealing an unexpected fracture of the left scaphoid. Due to the frequency of stress fractures in competitive sports, especially gymnastics, we recommend that bilateral scaphoid radiography be performed for athletes presenting with a unilateral scaphoid fracture, to avoid missing a fracture in the contralateral side.