Digambar Jain surnames often vary by region, language, and lineage. There is no single fixed list, but these are some commonly seen Digambar Jain surnames/clan names by region:

North India

• Jain
• Seth / Sethia
• Bhandari
• Khandelwal
• Lodha / Lohia
• Mahuja
• Goyal / Goel
• Anand
• Jaini / Jaini
• Kasturi / Kothari in some families

Rajasthan

• Khandelwal
• Maheshwari
• Porwal
• Oswal
• Shrimal
• Bhoj
• Dugar
• Sanghvi
• Jain
• Taparia

Madhya Pradesh / Bundelkhand

• Jain
• Seth
• Kothari
• Bharilla
• Doshi
• Bafna
• Sanghvi
• Patni
• Nahar

Uttar Pradesh / Delhi belt

• Jain
• Jindal
• Bansal
• Goel
• Agarwal
• Kothari
• Sethia
• Chugh
• Paharia

Gujarat / Maharashtra

• Jain
• Seth
• Bafna
• Doshi
• Sanghvi
• Kothari
• Mehta
• Dugar
• Shah in some Jain families

South India

• Jain
• Jaini
• Seth
• Ranka
• Bhandari
• Kumbhat
• Patel in some Jain families
• Ajmera
• Lunawat

Important note

In Jain tradition, many names are actually:

• gotra / clan names
• vanik / business-community names
• regional family surnames

rather than one uniform “Jain surname.”

If you want, I can also give you:

1. Digambar Jain gotras, or
2. state-wise surname list in a more complete format.