Answer

According to mainstream Jain tradition, no—there is no accepted Jain teaching that Shiva will become a Tirthankar.

Explanation

In Jain Dharma:

• A Tirthankar is a soul that achieves the highest spiritual purity through severe self-discipline, right faith, right knowledge, and right conduct.
• Tirthankar-hood is not based on being a god in the worldly sense.
• Jainism teaches that in each time cycle, there are 24 Tirthankars in the current era.

So, even if some traditions outside Jainism speak of Vishnu or Shiva in very exalted ways, Jain scriptures do not present Shiva as a future Tirthankar.

Spiritual Understanding

Jain Dharma focuses on the soul’s liberation, not on devotion to creator gods. A Tirthankar is not “made” by divine status. The soul becomes a Tirthankar through extreme purification of karma over many births.

So the important Jain question is not “Which deity will become a Tirthankar?” but rather:

• How can a soul remove karma?
• How can one follow the path of ahimsa, self-control, and detachment?
• How can one progress toward moksha?

Takeaway

In Jainism, Shiva is not recognized as a future Tirthankar. The focus is always on the soul’s own spiritual journey toward liberation.