hello Dear student we are happy to help as you have asked about the top BTech colleges in South India so here is the list of the top BTech colleges and I hope that will help you.

• PSG college of technology Coimbatore
• Shanmugha arts science technology and research academy
• Thyagaraj College of engineering Madurai
• College of engineering guindy Anna University
• Amrita School of engineering Coimbatore
• VIT University Vellore
• Manipal Institute of technology Manipal
• International Institute of information technology Bangalore

I hope this will be helpful for you .thank you