Koshiro Shimada

is a Japanese figure skater. With ice dance partner, Ikura Kushida, he is the 2025–26 Japanese national silver medalist.

As a singles skater, he is the 2022-23 Japanese national silver medalist, the 2024 Grand Prix de France silver medalist, a three-time ISU Challenger Series medalist, and the 2019 Bavarian Open champion. On the junior level, he is the 2018–19 Junior Grand Prix Final bronze medalist, a three-time ISU Junior Grand Prix medalist, and a two-time Japan Junior national medalist.

Personal life Koshiro Shimada was born in Ehime Prefecture, Japan.

2017–2018 season During the off-season, Shimada tore his left hip abductor muscle. In July, he underwent rehabilitation with a physiotherapist in Toronto, Canada.

He did end up competing on the 2017–18 Junior Grand Prix series, finishing fifth at 2017 JGP Croatia and seventh at 2017 JGP Poland. Shimada would not compete for the remainder of the season. His only other competition was the 2020–21 Japan Championships, where he finished eighth.

In December, Shimada placed ninth at the 2024–25 Japan Championships. It was subsequently announced that the pair would be coached by Cathy Reed at the Kinoshita Academy in Kyoto.

During the summer, Shimada was cast as Inukai Takeru in the storytelling ice show Hyoen – Mirror-Patterend Demon, starring Daisuke Takahashi and Takahisa Masuda.

Ice dance with Ikura Kushida 2025–2026 season: Debut of Kushida/Shimada In late October, Kushida/Shimada debuted as a team at the 2025 Western Sectional Championships, the qualifying competition for the Japanese National Championships. They won the event, almost sixteen points ahead of the second placed team, Sasaki/Ikeda. Shimada stated: "We are disappointed that we didn't achieve the minimum score we were aiming for. But as our first international competition experience, it was very fulfilling and satisfying."

A couple weeks later, Kushida/Shimada won the silver medal at the 2025–26 Japan Championships behind Yoshida/Morita. And The Waltz Goes On Libertango Akram Khan's Giselle 2025–2026 Got the Groove (SM Radio Edit) Show Me Something Special Got the Groove (SM Radio Edit) Got the Groove 2.8 (Caramba Short Traxx Remix) Moonlight Serenade Theme from Sabrina Faith

Men's singles Season Short program Free skating Exhibition 2024–2025 Fire Dance Rhapsody on a Theme of Paganini I Will Remain 2019–2020