Answer

In Jain tradition, 2 Tirthankars did not marry:

• Shri Mallinath Bhagwan — the 19th Tirthankar
• Shri Neminath Bhagwan — the 22nd Tirthankar

Explanation

Most Tirthankars lived as householders before taking diksha. However:

• Mallinath Bhagwan is traditionally understood as having remained unmarried.
• Neminath Bhagwan renounced worldly life before marriage, after seeing animals meant to be slaughtered for the wedding feast.

Takeaway

These examples show the Jain ideal of deep vairagya — detachment from worldly life — and compassion for all living beings.