In Jain cosmology, each half-cycle has 24 Tirthankars.

If you mean the current cycle (Avasarpini), the 24 Tirthankars are:

1. Rishabhdev
2. Ajitnath
3. Sambhavnath
4. Abhinandannath
5. Sumatinath
6. Padmaprabhu
7. Suparshvanath
8. Chandraprabhu
9. Pushpadant
10. Shitalnath
11. Shreyansnath
12. Vasupujya
13. Vimalnath
14. Anantanath
15. Dharmanath
16. Shantinath
17. Kunthunath
18. Aranath
19. Mallinath
20. Munisuvratnath
21. Naminath
22. Neminath
23. Parshvanath
24. Mahavir Swami

If you want, I can also give the names of all 24 Tirthankars in Hindi/Gujarati script.