| Club: | SC Rheindorf Altach |
| Season: | 2021–22 |
| Chrtitle: | Chairman |
| Chairman: | Werner Gunz |
| Mgrtitle: | Manager |
| Manager: | Damir Canadi |
| Stadium: | Stadion Schnabelholz |
| League: | Austrian Football Bundesliga |
| League Result: | 12th |
| Cup1: | Austrian Cup |
| Cup1 Result: | First round |
| Pattern La1: | _altach2122h |
| Pattern B1: | _altach2122h |
| Pattern Ra1: | _altach2122h |
| Body1: | FFFF00 |
| Shorts1: | 000000 |
| Socks1: | 000000 |
| Pattern La2: | _altach2122a |
| Pattern B2: | _altach2122a |
| Pattern Ra2: | _altach2122a |
| Leftarm2: | FFEE00 |
| Body2: | FFEE00 |
| Rightarm2: | FFEE00 |
| Shorts2: | 000000 |
| Socks2: | FFEE00 |
| Prevseason: | 2020–21 |
| Nextseason: | 2022–23 |
The 2021–22 season was the 91st season of play of SC Rheindorf Altach and the club's tenth consecutive season in the top flight of Austrian football. In addition to the domestic league, SC Rheindorf Altach participated in the Austrian Cup.
See main article: 2021–22 Austrian Football Bundesliga.
The league fixtures were announced on 22 June 2021.[1]
See main article: 2021–22 Austrian Cup.