US 모나스티리엔

The club was established in 1959 and won its first Tunisian League title in 1998 after defeating Ezzahra Sports in the league finals. As the national champions, Monastir played in the Arab Club Basketball Championship where it lost all three group stage games.

In the 1999–2000 season, Monastir won its first-ever double after winning both the league and cup title. Monastir beat Club Africain in the league final and Ezzahra in the cup final (66–61). In 2005, Monastir won its third Tunisian championship, defeating Stade Nabeulien 66–51.

The first international title for Monastir arrived in 2012, when they won the Maghreb Basketball Championship after defeating ES Radès in the final.

In 2014, Monastir made its debut in the FIBA Africa Club Championship, Africa's top continental league, for the first time. In 2017, the club ended at third place in the continental league.

In 2019 , Monastir won its fourth Tunisian championship defeating ES Rades. again in 2020 US Monastir won its fifth Tunisian championship and the second in row defeating the same ES Rades. In 2021, Monastir defeated Ezzahra Sports in the Tunisian finals and won its sixth championship, and the third in a row.

In 2021, Monastir was one of the twelve teams to play in the new Basketball Africa League (BAL) as they qualified as Tunisian national champions. In the inaugural season of the league, Monastir reached the Finals where it lost to Zamalek despite being favourites in the competition. Three players of Monastir (Omar Abada, Makrem Ben Romdhane and Wael Arakji) were named to the All-BAL First Team.

In the following season, the 2021–22 season, Monastir won the national double after capturing the CNA and Tunisian Cup titles. On 28 May 2022, Monastir won its first-ever BAL and African championship after defeating Petro de Luanda in the 2022 BAL Finals, becoming the first Tunisian team to win the BAL. Point guard Michael Dixon was named the league's MVP; Ater Majok and Radhouane Slimane were named to the All-BAL First Team. Representing the African continent, Monastir played in the 2023 edition of the FIBA Intercontinental Cup, where it finished in fourth place after losing to the Spanish team CB Canarias and the American team Rio Grande Valley Vipers.

In the 2023 BAL season, Monastir brought back coach Perišić three days before the tournament. However, Monastir was unable to qualify for the playoffs as the team ended with a 3–2 record and was ranked fifth based on a tiebreaker.