Dear Student :

The following colleges has NCC (National Cadet Corps) in Chennai:

1. KCG College of Technology - https://kcgcollege.ac.in/academic-support/national-cadet-corps-ncc/
2. Sri Sairam Engineering College - https://sairam.edu.in/ncc/
3. Sairam Institute of Technology - https://sairamit.edu.in/ncc/
4. SRM Easwari engineering College - https://srmeaswari.ac.in/national-cadet-corps/
5. GKM College of Engineering - http://www.gkmcet.net.in/activities-ncc.php
6. Jeppiaar Engineering College- https://jeppiaarcollege.org/jeppiaar/national-cadet-corps/ and few more

Hope this helps!