Here are some Jain-friendly baby names starting with S (for boys and girls), with simple meanings:

Boys (S):

• Shantinath – Name of the 16th Tirthankar; lord of peace.
• Sambhavnath – 3rd Tirthankar; auspicious one.
• Suparshvanath – 7th Tirthankar; very well‑protected, auspicious.
• Suvrat – One who keeps good vows; dharmic, disciplined.
• Siddharth / Sidharth – One who has achieved the goal; spiritually accomplished.
• Shreyansh – That which is best, excellent, auspicious.
• Shantiprakash – Light of peace.
• Satyendra – Lord of truth; one who lives by truth.
• Suryakant – Beloved of the sun; bright, pure.

A ready-made list of boys’ names from S is also available here:

Girls (S):

• Shrutika – Related to “Shrut” (scripture); one connected to sacred knowledge.
• Shrutika / Shruti – Sacred sound, teachings; often linked to Jain āgams.
• Shreya – Auspicious, blessed.
• Shubhi / Shubhra – Auspicious, pure.
• Smita / Smriti – Gentle smile / remembrance, right memory.
• Saumya – Gentle, soft-natured.
• Sulakshana – Having good signs/virtues.
• Shravika – Female Jain lay follower (śrāvikā).

All these names are acceptable in both Digambar and Shwetambar traditions; there is no difference in basic meaning, only sometimes in pronunciation or spelling.

If you tell me boy/girl and if you prefer more “purely religious” (Tirthankar/virtue-based) or “modern but Jain-friendly”, I can narrow to a very short list.