Sanoussy Ba (born 5 January 2004) is a German professional footballer who plays as a left-back and wing-back for 3. Liga club Waldhof Mannheim on loan from Eintracht Braunschweig.

Ba was born in Hof, Bavaria, where he started playing football with VfB Moschendorf, before joining the town's main club, SpVgg Bayern Hof.

Ba joined RB Leipzig in 2016, where he entered the first team on the summer 2022. During the pre-season, he played the friendly against Klopp's Liverpool.

Ba made his professional debut for RB Leipzig on 30 August 2022, replacing Mohamed Simakan at the hour mark of a 8–0 away Cup win to FC Teutonia Ottensen. He became a regular feature in the match-day squad, both in Bundesliga, and in the Champions League, figuring on the bench during the 2–0 away win against Celtic FC.

On 1 July 2024, Ba signed a three-year contract with Eintracht Braunschweig.

On 28 January 2026, Ba was loaned by Waldhof Mannheim in 3. Liga.

Born in Germany, Ba is of Senegalese descent. He is a youth international for Germany, having started playing with the under-18s in the late summer 2021.

An ambidextrous footballer, Ba is able to play both as a full-back or higher, as a wing-back even an offensive winger, always on the left side.