Here are some Jain-inspired baby boy names starting with T:

• Tirth — sacred place of liberation
• Tirthankar — spiritual ford-maker
• Trishala — mother of Bhagwan Mahavir’s childhood form; used mainly for girls, so not ideal for a boy
• Tej — radiance, brilliance
• Tarun — youthful, energetic
• Tushar — coolness, purity
• Tarak — liberator, savior
• Tejas — glow, inner light
• Tannay — son, beloved child
• Tanish — ambition, desire for excellence

If you want, I can also give:

• modern Jain boy names starting with T
• unique names with meaning
• names based on Tirthankars and Jain virtues