Ryoma Yamamoto (?? ??, Yamamoto Ryoma, born 14 July 1995) is a Japanese athlete specialising in the triple jump.
He represented his country at the 2017 World Championships without qualifying for the final.
His personal bests in the event are 16.87 metres outdoors (+1.8 m/s, Hiroshima 2017) and 15.71 metres indoors (Osaka 2014).