Koyapalli Kelappan was an Indian politician, independence activist, educationist and journalist. During the Indian independence movement, he was the lead figure of Indian National Congress in Kerala and was popularly known as Kerala Gandhi. After Indian independence, he held various seats in Gandhian organisations. He was the co-founder and the first president of the Nair Service Society and was also the founder of Kerala Kshetra Samrakshana Samiti.

The Nair Service Society (NSS) is an organisation created for the social advancement and welfare of the Nair community that is found primarily in the state of Kerala in Southern part of India. It was established under the leadership of Mannathu Padmanabha Pillai. The NSS is a three-tier organisation with Karayogams at the base level, Taluk Unions at the intermediate level and a central headquarters operating from Perunna, Changanassery in Kerala. G. Sukumaran Nair is currently the General Secretary.