Here are Jain-friendly baby boy names starting with the letter D, with simple meanings:

1. Dharmanath – Name of the 15th Tirthankar; lord of dharma (righteousness).
2. Dharam / Dharma – Righteousness, virtue, right conduct.
3. Dharamraj / Dharmaraj – King of righteousness; one who rules by dharma.
4. Dharamveer / Dharmaveer – Brave in upholding dharma.
5. Dharmaendra / Dharmendra – Lord of dharma; protector of righteousness.
6. Dharmesh / Dharmesh – Master of dharma; one centered in virtue.
7. Dharmik – Righteous, virtuous person.
8. Dheer / Dhir – Patient, calm, courageous.
9. Dhiraj / Dheeraj – Patience, inner calm.
10. Dhruv – Steadfast, firm; like the fixed pole star.
11. Dhruvesh / Dhruvin – Lord/one of firmness and stability.
12. Dhyanu / Dhyay / Dhyeya – Related to meditation and focus (dhyān).
13. Dipesh / Deepesh – Lord of light; one who brings inner light.
14. Dipak / Deepak – Lamp; source of light and wisdom.
15. Dipankara / Deepankar – One who creates light; radiant.
16. Dhanesh – Lord of wealth; in Jain sense, wealth of virtues/merit.
17. Devansh / Deval – Part of the divine; virtuous, pure being.
18. Darshan – Holy vision; also used for “Jain darshan” (Jain philosophy).
19. Divit / Divyesh / Divyam – Divine, full of inner purity and light.
20. Dayan / Dayesh / Dayal – Compassionate, kind (root: dayā = compassion).

All these are compatible with Jain dharma and commonly acceptable in both Digambar and Shwetambar families; there is no strict tradition-wise difference for such names.

For a focused, very Jain-feeling choice from D, many families like: Dharmanath, Dharmesh, Dhruv, Dhiraj, Deepak, Dipesh.

You can see similar Jain-friendly name suggestions here and