1. Liga
- 1. Bundesliga
- 1. Liga (Slovakia)
- 1. Liga Classic
- 1. Liga Promotion
- 2. Liga (disambiguation)
- 3. Liga (disambiguation)
- A-1 Liga
- Austrian Football First League
- Czech 1. Liga
- Czech First League
- Erste Liga (ice hockey)
- I Liga (basketball)
- I Lyga
- I liga
- I liga (women's football)
- I liga Rugby
- Latvian First League
- Liga (disambiguation)
- Liga 1 (disambiguation)
- Liga I
- Polish 1. Liga
- Polish Speedway First League
- Primeira Liga
- Prva Liga (disambiguation)
- Russian First League
- Slovak 1. Liga
- Swiss 1. Liga (ice hockey)