Yoshibayama Junnosuke (Japanese: 吉葉山 潤之輔, April 3, 1920 – November 26, 1977), real name Ikeda Junnosuke (池田 潤之輔), was a Japanese professional sumo wrestler from Atsuta District, Hokkaido. He was the sport's 43rd yokozuna. He suffered a number of injuries and only won one tournament championship, but was a popular wrestler. He was a runner-up five times, and earned three special prizes and two gold stars in his top division career. After his retirement in 1958 he revived and led the Miyagino stable until his death in 1977.