Dr. Sreedhara Panicker Somanath (born July 1963) is an Indian aerospace engineer served as the chairman of ISRO. Under his chairmanship, ISRO carried out the third Indian lunar exploration mission named Chandrayaan-3. The lander named Vikram and the rover named Pragyan landed near the lunar south pole region on 23 August 2023 at 18:04 IST, making India the first country to successfully land a spacecraft near the lunar south pole and the fourth country to demonstrate soft landing on the Moon.

Somanath served as the director of Vikram Sarabhai Space Centre (VSSC), Thiruvananthapuram and director of Liquid Propulsion Systems Centre (LPSC), Thiruvananthapuram. Somanath is known for his contributions to launch vehicle design, particularly in the areas of launch vehicle systems engineering, structural design, structural dynamics, and Pyrotechnics.

After concluding his tenure at ISRO, Somanath assumed the role of chancellor at Chanakya University, a liberal arts institution based in Bengaluru.

Somanath was born in a Malayali Nair family as a child of V. Sreedhara Panicker, a Hindi teacher, and Thankamma at Thuravoor in Alappuzha district of Kerala.

Somanath studied at St. Augustine's High School, Aroor, and completed the Pre-Degree course from Maharaja's College, Ernakulam. He then received his graduate degree in mechanical engineering from Thangal Kunju Musaliar College of Engineering, Kollam, and a master's degree in aerospace engineering from Indian Institute of Science, Bangalore, with a specialization in dynamics and control. He was awarded a Ph.D. from the Indian Institute of Technology Madras (IIT Madras).

Somanath is married to Valsala, with whom he has a daughter and a son.

After his graduation, Somanath joined the Vikram Sarabhai Space Centre in 1985. He was associated with the Polar Satellite Launch Vehicle project during its initial phase. He became associate director of the Vikram Sarabhai Space Centre and the project director of the Geosynchronous Satellite Launch Vehicle Mark III launch vehicle in 2010. He was also the deputy director of the Propulsion and Space Ordnance Entity till November 2014.

In June 2015, he took over as director of the Liquid Propulsion Systems Centre at Valiamala, Thiruvananthapuram and served until January 2018. Somanath took over as director of the Vikram Sarabhai Space Centre from K. Sivan who became chairman of Indian Space Research Organisation. In January 2022, he took over as the chairman of the Indian Space Research Organisation, again succeeding K. Sivan.