Maxime Grousset (; born 24 April 1999) is a French swimmer from New Caledonia. He is a world record holder in the short course 4×50 metre mixed freestyle relay and european record holder in the long course 100 butterfly with a time of 49.62, second best performer and third best performances of all time. In butterfly, he has won three gold medals at the World Aquatics Championships (long course), in 50 m in 2025, and in 100 m in 2023 and 2025.

Early life Grousset was born and raised in the French sui generis overseas collectivity of New Caledonia, and began swimming at age five. His younger sister is Emma Grousset, who was crowned Miss New Caledonia 2023 and competed at Miss France 2024.

Career 2017–2018 At the 2017 European Junior Swimming Championships in June and July, Grousset won bronze medals in the 50 metre freestyle, with a 22.59, and the 50 metre butterfly, with a 23.88, and placed seventh in the 100 metre freestyle with a 49.85 and fourth in the 4×100 metre medley relay, where he contributed to a final time of 3:41.67.LEN (2 July 2017). "2017 Len European Junior Swimming Championships: Results Book". Microplus Informatica. Retrieved 31 January 2023. The following month, at the 2017 World Junior Swimming Championships, he won the silver medal in the 50 metre freestyle with a time of 22.25 seconds, placed seventh in the 100 metre freestyle with a 49.95 and sixth in the 4×100 metre medley relay with a 3:41.89.FINA (28 July 2017). "6th FINA World Junior Championships 2017 Indianapolis (USA): Results Book". Omega Timing. Retrieved 31 January 2023. He competed in the 4×100 metre mixed freestyle relay event at the 2018 European Aquatics Championships, winning the gold medal.

2019–2021 At the 2019 World Aquatics Championships in Gwangju, South Korea, Grousset won a bronze medal in the 4×100 metre mixed freestyle relay, contributing a 48.61 for the second leg of the relay in the preliminaries before being substituted out and Medhy Metella substituted in for the final.FINA (27 July 2019). "18th FINA World Championships Gwangju (KOR): Mixed 4x100m Freestyle Preliminary Results Summary". Omega Timing. Retrieved 6 March 2023.FINA (27 July 2019). "18th FINA World Championships Gwangju (KOR): Mixed 4x100m Freestyle Final Heat 1 Results". Omega Timing. Retrieved 6 March 2023. Later in the year, he won a bronze medal in the 4×50 metre mixed freestyle relay at the 2019 European Short Course Championships, held in December in Glasgow, Scotland, leading off with a 21.35 to contribute to a finish in a French record time of 1:28.86."Championnats d'Europe 2019 en petit bain à Glasgow" (in French). amiensnatation.com. 8 December 2019. Retrieved 6 March 2023. In 2021, at the 2020 Summer Olympics in Tokyo, Japan, he placed fourth in the 100 metre freestyle, with a time of 47.72 seconds, behind Caeleb Dressel of the United States, Kyle Chalmers of Australia, and Kliment Kolesnikov of Russia.Callier, Cédric (11 August 2022). "Máxime Grousset, un nouveau statut à confirmer" (in French). Le Figaro. Retrieved 11 August 2022.

2021 World Short Course Championships The second day of the 2021 World Short Course Championships in December in Abu Dhabi, United Arab Emirates, Grousset placed sixth in the 4×50 metre mixed freestyle relay, swimming a 21.17 for the lead-off leg of the relay to contribute to a final time of 1:30.06.FINA (17 December 2021). "15th FINA World Swimming Championships (25m) Abu Dhabi (UAE): Mixed 4x50m Freestyle Final Results". Omega Timing. Retrieved 10 March 2023. On the morning of day four, he placed seventeenth in the preliminaries of the 50 metre butterfly with a time of 22.94 seconds, not advancing to the evening semifinals.FINA (19 December 2021). "15th FINA World Swimming Championships (25m) Abu Dhabi (UAE): Men's 50m Butterfly Heats Results Summary". Omega Timing. Retrieved 10 March 2023. In the evening, he placed sixth in the final of the 50 metre freestyle, finishing in a time of 21.08 seconds.FINA (19 December 2021). "15th FINA World Swimming Championships (25m) Abu Dhabi (UAE): Men's 50m Freestyle Final Results". Omega Timing. Retrieved 10 March 2023. Two days later, he started the evening finals session off with a fifth-place finish in the 100 metre freestyle in a time of 46.20 seconds.FINA (21 December 2021). "15th FINA World Swimming Championships (25m) Abu Dhabi (UAE): Men's 100m Freestyle Final Results". Omega Timing. Retrieved 10 March 2023. He concluded the day, and the Championships, with a relay team disqualification in the final of the 4×100 metre medley relay, with the disqualification due to a negative reaction time for the start by the breaststroke swimmer.FINA (21 December 2021). "15th FINA World Swimming Championships (25m) Abu Dhabi (UAE): Men's 4x100m Medley Relay Final Results". Omega Timing. Retrieved 10 March 2023.

2022 2022 World Championships At the 2022 World Aquatics Championships, contested at Danube Arena in Budapest, Hungary, Grousset won the silver medal in the 100 metre freestyle, finishing with a time of 47.64 seconds, which was 0.06 seconds behind gold medalist David Popovici of Romania.FINA (22 June 2022). "19th FINA World Championships Budapest (HUN): Men's 100m Freestyle Final Results". Omega Timing. Retrieved 22 June 2022."VIDEO. Mondiaux de natation : Maxime Grousset médaillé d'argent sur le 100m nage libre" (in French). La Dépêche du Midi. 22 June 2022. Retrieved 22 June 2022.Richard, Gédéon (23 June 2022). "Mortalité routière, Maxime Grousset, Groupama Race et Mini-Jeux de Saipan : l'actu à la 1 du jeudi 23 juin 2022" (in French). La Première. Retrieved 23 June 2022. He also won the bronze medal in the 50 metre freestyle with a time of 21.57 seconds, finishing 0.25 seconds behind gold medalist Ben Proud of Great Britain and 0.16 seconds behind silver medalist Michael Andrew of the United States.FINA (24 June 2022). "19th FINA World Championships Budapest (HUN): Men's 50m Freestyle Final Results". Omega Timing. Retrieved 24 June 2022.Brosseau, Anaïs (24 June 2022). "Mondiaux de natation 2022 : revivez la course de Maxime Grousset, qui décroche la médaille de bronze sur le 50 mètres nage libre" (in French). France Info. Retrieved 24 June 2022.

2022 European Championships Grousset started competition on day one of the 2022 European Aquatics Championships, held in Rome, Italy, ranking second in the preliminaries of the 50 metre butterfly with a time of 23.20 seconds and advancing to the semifinals.LEN (11 August 2022). "European Aquatics Championships Roma 2022: Results 50m Butterfly Men Preliminary". Microplus. Retrieved 11 August 2022. In the semifinals, he ranked second across both heats, qualifying for the final with a personal best time of 22.90 seconds."En Direct – Championnat D'Europe De Natation: Énorme Performance Des Français Et Médaille De Bronze Sur Le 4x200m" (in French). RMC Sport. 11 August 2022. Retrieved 11 August 2022. Day two of competition, in the morning preliminaries of the 100 metre freestyle, he ranked fourth and qualified for the evening semifinals with a time of 48.31 seconds.LEN (12 August 2022). "European Aquatics Championships Roma 2022: Results 100m Freestyle Men Preliminary". Microplus. Retrieved 12 August 2022. In the evening session, he won the silver medal in the 50 metre butterfly with a time of 22.97 seconds, 0.08 seconds behind gold medalist Thomas Ceccon of Italy.LEN (12 August 2022). "European Aquatics Championships Roma 2022: Results 50m Butterfly Men Final". Microplus. Retrieved 12 August 2022.Rolet, Mattéo (12 August 2022). "Natation : le Français Maxime Grousset vice-champion d'Europe sur 50 m papillon" (in French). Le Figaro. Retrieved 12 August 2022."Euro de natation: Grousset médaillé d'argent sur le 50 m papillon" (in French). France 24. 12 August 2022. Retrieved 12 August 2022.Duvert, Yann (15 August 2022). "Maxime Grousset, poisson pilote" (in French). Les Echos. Retrieved 15 August 2022. Later in the session, he lowered his time to a 48.15 for the semifinals of the 100 metre freestyle and qualified for the final ranking fifth.LEN (12 August 2022). "European Aquatics Championships Roma 2022: Results 100m Freestyle Men Semi-Final". Microplus. Retrieved 12 August 2022. In the final of the 100 metre freestyle the following day, he placed fourth with a time of 47.78 seconds, finishing 0.15 seconds behind bronze medalist Alessandro Miressi of Italy.LEN (13 August 2022). "European Aquatics Championships Roma 2022: Results 100m Freestyle Men Final". Microplus. Retrieved 13 August 2022.Fillet, Anthony (14 August 2022). "Natation : Maxime Grousset se classe quatrième d'une course d'anthologie" (in French). Les Nouvelles Calédoniennes. Retrieved 14 August 2022.

On the fourth day, Grousset led-off the 4×100 metre freestyle relay in the final with a 47.69 before the relay was disqualified for an early start by the second swimmer.LEN (14 August 2022). "European Aquatics Championships Roma 2022: Results 4x100m Freestyle Men Final". Microplus. Retrieved 14 August 2022."Rome 2022: l'Italie sacrée à domicile sur le 4x100 m nage libre, les Bleus disqualifiés" (in French). France Télévisions. 14 August 2022. Retrieved 14 August 2022."Championnats d'Europe de natation. Les Italiens titrés sur 4 x 100 m, les Français disqualifiés" (in French). Ouest-France. 14 August 2022. Retrieved 14 August 2022. The next day, he swam the lead-off leg of the 4×100 metre mixed freestyle relay, contributing a 48.02 to the final mark of 3:22.80 to win the gold medal.LEN (15 August 2022). "European Aquatics Championships Roma 2022: Results 4x100m Freestyle Mixed Final". Microplus. Retrieved 15 August 2022."Le relais 4 x 100 m nage libre mixte champion d'Europe" (in French). L'Équipe. 15 August 2022. Retrieved 15 August 2022. For the preliminaries of the 50 metre freestyle in the morning on day six, he tied Diogo Ribeiro of Portugal for fourteenth rank with a time of 22.23 seconds and qualified for the semifinals.LEN (16 August 2022). "European Aquatics Championships Roma 2022: Results 50m Freestyle Men Preliminary". Microplus. Retrieved 16 August 2022.Anselmetti, Leo (16 August 2022). "Natation – Championnats d'Europe : Maxime Grousset et Yohann Ndoye Brouard en demi-finale, le relais mixte impressionne" (in French). Eurosport. Retrieved 16 August 2022.Faatau, Jean-Tenahe; Chaillot, Damien (16 August 2022). "Le Calédonien Maxime Grousset, champion parmi l'équipe de relais, la Calédonienne Emma Terebo en finale du 100 mètres dos, aux Championnats d'Europe de natation" (in French). outremers360.com. Retrieved 16 August 2022. In the evening semifinals, he brought his time down to a 21.75, ranking fifth overall and qualifying for the final.LEN (16 August 2022). "European Aquatics Championships Roma 2022: Results 50m Freestyle Men Semi-Final". Microplus. Retrieved 16 August 2022."Championnats d'Europe de natation: Grousset, Tomac et Ndoye Bouard en finale" (in French). Le Figaro. 16 August 2022. Retrieved 16 August 2022. The seventh day, he placed fifth in the final of the 50 metre freestyle with a time of 21.87 seconds.LEN (17 August 2022). "European Aquatics Championships Roma 2022: Results 50m Freestyle Men Final". Microplus. Retrieved 17 August 2022. Later in the session, he won a silver medal as part of the 4×100 metre medley relay, anchoring the relay to a finish in 3:32.50 with a split time of 47.43 seconds.LEN (17 August 2022). "European Aquatics Championships Roma 2022: Results 4x100m Medley Men Final". Microplus. Retrieved 17 August 2022.Pérez, Marta (17 August 2022). "El relevo masculino de 4x100 estilos termina octavo en el Europeo" (in Spanish). Mundo Deportivo. Retrieved 17 August 2022.

2022 Swimming World Cup