Answer

No, in the current half-cycle of time called Avasarpiṇi, Lord Rishab Dev is considered the first Tirthankar. So there were no Tirthankars before him in this cycle.

Explanation

According to Jain cosmology:

• Each half-cycle of time has 24 Tirthankars.
• Lord Rishab Dev is the 1st Tirthankar.
• The other 23 come after him in that cycle.

So if you mean before Rishab Dev in this present cycle, the answer is no.

Spiritual Understanding

Lord Rishab Dev is revered as the great beginning of this current spiritual era. He is seen as the one who first re-established dharma, discipline, and civilized life for humanity in this cycle.

Takeaway

Before Lord Rishab Dev in the present Avasarpiṇi, there were no Tirthankars. If you mean in the endless past across many cycles of time, then Jain tradition says there have been countless Tirthankars overall.