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

• Aarjav — straightforwardness, simplicity
• Anekant — the Jain principle of many-sided truth
• Arihant — a conquered soul, victorious over inner passions
• Atman — soul
• Amit — infinite, immeasurable
• Anant — endless, eternal
• Arhat — worthy, venerable soul
• Abhay — fearlessness
• Ahinsh — non-violence, peaceful nature
• Avinash — imperishable, eternal

For a more purely Jain spiritual choice, Arihant, Arhat, Anekant, and Aarjav are especially meaningful.