| Competition: | Ljubljana Subassociation League |
| Season: | 1938–39 |
| Winners: | I. SSK Maribor |
| Prevseason: | 1937–38 |
| Nextseason: | 1939–40 |
The 1938–39 Ljubljana Subassociation League was the 20th season of the Ljubljana Subassociation League. I. SSK Maribor won the league for the third time, defeating Bratstvo in the final.[1]