- “Dr. Y. Nayudamma Memorial Gold Medal” awarded by Andhra Pradesh Academy of Sciences (2009).
- “BHASKARA Award” by Indian Society of Remote Sensing (2008).
- “Silver Jubilee Honour” by Ministry of Earth Sciences (2006).
- “VASVIK Industrial Research Award” in the field of Electrical and Electronics Sciences & Technology (2005) .
- “K. R. Ramanathan Memorial Gold Medal” by Indian Geophysical union (2003).
Dr. K. Radhakrishnan has also delivered several prestigious key note and convocation addresses including the ARDB Prof. Satish Dhawan Memorial Lecture of Aeronautical Society of India in 2007 and Subroto Mukherjee Memorial Oration of Indian Aerospace Society in 2008.