Union Sportive Monastir, commonly known as US Monastir, is a professional basketball club in Monastir, Tunisia. The club was established in 1959 and won its first Tunisian league title in 1998.
Monastir is a five-time The Champion at National A winner and two-time Tunisian Basketball Cup winner. In the 1999–2000 season, the club won it's first double ever after winning both the league and cup.
Monastir made its debut in the FIBA Africa Club Championship in 2014, recording third place in the 2017 edition of the tournament.
- The Champion at National A: 1998, 2000, 2005, 2019, 2020
- Tunisian Basketball Cup Winner: 2000, 2020
- Tunisian Basketball Cup Runner Up: 1992, 1998, 1999, 2001, 2005, 2015, 2016, 2017, 2019
- Men’s Basketball Federation Champion: 2012
- Maghreb Championship of Men’s Basketball Clubs Winner: 2012
- FIBA Africa Clubs Champions Cup Third Place: 2017
- Arab Club Basketball Championship Third Place: 2019