| Competition: | Ljubljana Subassociation League |
| Season: | 1921–22 |
| Winners: | Ilirija |
| Prevseason: | 1920–21 |
| Nextseason: | 1922–23 |
The 1921–22 Ljubljana Subassociation League was the third season of the Ljubljana Subassociation League. Ilirija won the league for the third season in a row, defeating I. SSK Maribor 5–1 in the final.[1]