| Club: | FC Sion |
| Season: | 2022–23 |
| Chrtitle: | President |
| Chairman: | Christian Constantin |
| Mgrtitle: | Head coach |
| Manager: | Paolo Tramezzani |
| Stadium: | Stade Tourbillon |
| League: | Swiss Super League |
| League Result: | 10th (relegated) |
| Cup1: | Swiss Cup |
| Cup1 Result: | Quarter-finals |
| Prevseason: | 2021–22 |
| Nextseason: | 2023–24 |
The 2022–23 season was the 114th in the history of FC Sion and their 15th consecutive season in the top flight. The club participated in Swiss Super League and Swiss Cup. The season covered the period from 1 July 2022 to 30 June 2023.
See main article: 2022–23 Swiss Super League.
The league fixtures were announced on 17 June 2022.
See main article: 2022–23 Swiss Cup.