Answer

No, a non-Jain person who becomes Jain does not automatically get the surname “Jain.”

The word “Jain” means a follower of the Jinas—the enlightened beings who conquered attachment and aversion. It is primarily a religious identity, not necessarily a surname.

Explanation

A person may accept Jain Dharma by following Jain principles such as:

• Ahimsa — non-violence
• Satya — truthfulness
• Aparigraha — non-possessiveness
• Vegetarianism and compassion
• Faith in the Tirthankars and Jain teachings

But their family surname usually remains the same unless they legally or personally choose to change it.

Many people born in Jain families may have surnames like Shah, Mehta, Doshi, Sanghvi, Oswal, Gandhi, Chhajed, and many others. Not every Jain person has “Jain” as a surname.

Spiritual Understanding

In Jain Dharma, what matters most is not the surname, but the person’s faith, conduct, compassion, self-discipline, and effort toward spiritual purity.

Takeaway

Becoming Jain means adopting the path of the Jinas. The surname “Jain” is optional and social/legal, not a spiritual requirement.