Original Le Coq Sportif football shirt Fiorentina 2016/17

The 2016–17 season was the 90th season in ACF Fiorentina's history and their 79th in the top-flight of Italian football. Fiorentina competed in Serie A, the Coppa Italia, and the UEFA Europa League.

The club continued its league regression under Paulo Sousa, finishing eighth after an average league campaign, while also being eliminated in the Coppa Italia in the quarter-finals. However perhaps the poorest result of the season was Fiorentina's elimination from the UEFA Europa League in the round of 32 by German club Borussia Mönchengladbach; after winning the first leg 1–0 in Germany and taking a 2–0 lead at home in the second leg, the team managed to concede four straight goals, losing 4–3 on aggregate.

The season was Sousa's second and last in charge of the team, as his contract was not renewed for the 2017–18 season.