Maroua Mathlouthi (born August 22, 1988 in Tunis) is a Tunisian swimmer, who specialized in freestyle and individual medley events. She is a multiple-time Pan Arab Games champion, and a two-time gold medalist for her respective categories (800 m freestyle and 400 m individual medley) at the 2006 African Swimming Championships in Dakar, Senegal. Mathlouthi had won a total of four medals, including three silver for the women's freestyle (200, 400, and 1500 m) at the 2007 All-Africa Games in Algiers, Algeria.
Mathlouthi was slated to compete in a medley double at the 2008 Summer Olympics in Beijing, but withdrew from the competition for personal and health reasons.
Mathlouthi also served as a varsity swimmer of the SMU Mustangs at the Southern Methodist University in Dallas, Texas, and a member of Amiens Metropole Natation in Amiens, France. She is also the sister of Ahmed Mathlouthi, who competed in the men's 200 m freestyle at the 2012 Summer Olympics in London.