| Competition: | Luxembourg National Division |
| Season: | 1939–40 |
| Winners: | Stade Dudelange (2nd title) |
| Matches: | 90 |
| Total Goals: | 470 |
| Highest Scoring: | AS Differdange 4–9 FC Progrès Niedercorn |
| Prevseason: | 1938–39 |
| Nextseason: | 1944–45 |
The 1939–40 Luxembourg National Division was the 30th season of top level association football in Luxembourg.
It was performed in 10 teams, and Stade Dudelange won the championship.