Terunofuji Haruo (Japanese: 照ノ富士 春雄, born 29 November 1991 as Gantulgyn Gan-Erdene (Mongolian: Гантулгын Ган-Эрдэнэ)) is a Mongolian professional sumo wrestler from Ulaanbaatar. He entered sumo in January 2011, and took the second division jūryō championship in his debut as a sekitori in September 2013. He took the top makuuchi division championship in May 2015, only 25 tournaments after his professional debut, which is third behind the renowned Asashōryū and Takanohana's 23 tournaments. This earned him promotion to sumo's second highest rank of ōzeki. He has been runner-up in four other tournaments, and has four special prizes for Fighting Spirit and Outstanding Performance. He has suffered from knee injuries and having survived being kadoban or in danger of demotion from the rank of ōzeki on three previous occasions he was finally demoted after the September 2017 tournament. After a long injury layoff he fell to the second lowest jonidan division in 2019 but staged a successful comeback and returned to the makuuchi division after the March 2020 tournament, the first wrestler to do so from such a low rank. Due to the May 2020 Natsu tournament being cancelled as a result of the COVID-19 pandemic, Terunofuji's first tournament back in makuuchi ended up being the July 2020 Nagoya tournament. Terunofuji won the basho with a 13-2 record, thus claiming his second top division championship. He wrestles for Isegahama stable.