Ichiyamamoto Daiki (Japanese: 一山本 大生, born 1 October 1993 as Daiki Yamamoto (山本 大生, Yamamoto Daiki)) is a Japanese professional sumo wrestler from Iwanai, Hokkaido. A former amateur wrestler at Chuo University, he made his professional debut in January 2017, reaching the top makuuchi division in July 2021. His highest rank has been maegashira 13. He wrestles for Hanaregoma stable.