| Club: | Rochdale |
| Season: | 1921–22 |
| Manager: | Tom Wilson |
| Chairman: | JG Ramsbottom |
| Stadium: | Spotland Stadium |
| League: | Football League Third Division North |
| Cup1: | FA Cup |
| Cup1 Result: | 5th round qualifying |
| League Topscorer: | Harry Dennison |
| Season Topscorer: | Harry Dennison |
| Pattern La1: | _black_stripes |
| Pattern B1: | _blackstripes |
| Pattern Ra1: | _black_stripes |
| Pattern So1: | _whitetop |
| Leftram1: | ffffff |
| Body1: | ffffff |
| Rightarm1: | ffffff |
| Shorst1: | ffffff |
| Socks1: | 000000 |
| Prevseason: | 1920-21 |
| Nextseason: | 1922–23 |
The 1921–22 season saw Rochdale compete in the newly formed Football League Third Division North, where they finished in 20th and last position with 26 points.
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See main article: 1921–22 Football League.
See main article: 1921–22 FA Cup.