“Baid” (also written as “Vaid” / “Vaidya” in some places) is a surname, not a single fixed ethnicity. It is used by different communities in India, including some Jain families.

In the Jain context:

• Origin of the word:

“Baid / Vaid” comes from Sanskrit “Vaidya”, meaning doctor / physician (one who knows the Vedas or one skilled in medicine). Over time it became a family or community name.

• Community / caste side:

Among Jains, Baid is usually found within Baniya / Vaishya type trading communities. - There are Jain Baid families especially in parts of Rajasthan, Haryana, Delhi, and Uttar Pradesh, etc. - They generally follow either Shwetambar or Digambar Jain traditions, depending on the family’s background, not on the surname itself.

• Important point:

The surname Baid does not automatically mean a person is Jain, Hindu, or from any one particular religion. The same surname can be used by: - Jains - Hindus - Sometimes other Indian communities

So, from a Jain-dharma perspective:

• “Baid” is a social/family name, not a spiritual category.
• In Jainism, jāti / surname is not spiritually important; what matters is right faith, right knowledge, and right conduct (samyak darshan, jnān, chāritra), regardless of one’s surname or birth.