Hiroto Shimizu (渠水 è£Âç» Shimizu Hiroto) is a Japanese competition climber, specializing in competition lead climbing.
Shimizu began climbing on the IFSC Climbing World Cup circuit in 2014, advancing to all the lead world cup semifinals in his debut season.
In December 2015, Shimizu won a gold and bronze medal in the Lead and Bouldering disciplines respectively at the Asian Youth Championships in Putrajaya.
In July 2019, Shimizu earned his first World Cup medal, taking silver at the Lead World Cup in Briançon, completing an all-Japanese podium.
In October 2019, Shimizu won his first Lead World Cup in Inzai, becoming the fifth Japanese man to win a Lead World Cup.
In 2023, he claimed silver in the Lead discipline at the Asian Championships in Riyadh.
In 2025, Shimizu's fourth place finish at the Lead Japan Cup earned him a spot on JapanâÂÂs national team after six years. He won a bronze medal in the Lead discipline at the 2025 Asian Cup in Almaty.