Ryusei Nishioka

Ryusei Nishioka (; born November 1, 2003) is a Japanese trampoline gymnast. He won two silver medals at the 2021 World Championships and one bronze medal at the 2023 World Championships. In 2021, he broke the world record difficulty score for trampoline gymnastics.

Early and personal life Nishioka was born on November 1, 2003, in Higashiōsaka and began artistic gymnastics when he was two years old. He switched to trampoline gymnastics in grade one of primary school. At the 2018 Pacific Championships, he won a gold medal in the team event. He also won a bronze medal in the junior individual event and a silver medal in the synchronized event with Motoki Nakayama. He then won the individual bronze medal at the 2018 World Age Group Competition in the 15–16 age group.

Nishioka won the All-Japan Championships at the senior level in both 2020 and 2021.

During the 2021 World Championships in Baku, Nishioka successfully competed a routine with seven triple somersaults. His difficulty score was 18.900, which broke the world record difficulty score for trampoline gymnastics. With this routine, he won the silver medal in the individual event behind China's Yan Langyu due to a lower execution score. He also won a silver medal in the individual team event.

Nishioka won the individual title at the 2022 Coimbra World Cup, and he won a silver medal in synchronized trampoline with Yamato Ishikawa. One week later at the Arosa World Cup, he once again won the individual title. At the 2022 World Championships, he finished second in the individual qualification round. However, he tore his meniscus in the left knee during the semifinal round and withdrew from the competition. He had surgery in December and missed three months of training. Then at the Palm Beach World Cup, he finished fourth in the individual event. Then at the Varna World Cup, he won the bronze medal behind Chinese athletes Yan Langyu and Wang Zisai. He once again won the bronze medal in the individual event at the 2023 World Championships behind Yan and Wang.

Nishioka finished fifth in the individual event at the 2024 Cottbus World Cup despite a routine with six triple somersaults. Then at the Arosa World Cup, he only finished 23rd in the semifinals and did not advance. During the qualification round for the individual event, he was unable to complete both of his routines, and he finished in last place and did not advance to the finals.