Here are Jain-friendly girl names starting with the letter M, with brief meanings:

• Madhavi — sweet, honey-like; also a flower
• Madhuri — sweetness
• Madhvi — sweet, pleasant
• Malini — graceful, fragrant; a jasmine-like name
• Malti — jasmine flower
• Meera / Mira — devoted, beloved; associated with devotion
• Megha — cloud; often used for a calm, serene character
• Mohini — enchanting, charming
• Maitri — friendship, benevolence
• Maitreyā / Maitriya — true friendship or amiability
• Mansi — thoughts, a thoughtful person
• Manorama — pleasing to the mind; charming
• Manvi — one who is wise or has a strong mind
• Meru — a mythic mountain; symbolic of stability
• Mitali — friendship, friendly nature
• Mansiya — mindful, thoughtful
• Maitreyi — benevolent friend; a steady, kind heart
• Medha — intelligence, wisdom
• Muniya — gentle, simple (often used as a respectful given name)

If you’d like, I can tailor the list to specific origins (Sanskritic, Prakrit, or regional) or provide meanings aligned with Digambar or Śvetāmbara traditions.