| Competition: | Ljubljana Subassociation League |
| Season: | 1923–24 |
| Winners: | Ilirija |
| Prevseason: | 1922–23 |
| Nextseason: | 1924–25 |
The 1923–24 Ljubljana Subassociation League was the fifth season of the Ljubljana Subassociation League. Ilirija won the league for the fifth time in a row, defeating I. SSK Maribor 5–0 in the final.[1]