Tirunellai Narayana Iyer Seshan was an Indian civil servant and bureaucrat who served with the Indian Administrative Service. After serving in various positions in Madras and in various ministries of the Central Government, he served as the 18th Cabinet Secretary of India in 1989. He was appointed the 10th Chief Election Commissioner of India (1990–96) and became known for his electoral reforms. He won the Ramon Magsaysay Award for government service in 1996.

The Chief Election Commissioner of India (CEC) heads the Election Commission of India, a body constitutionally empowered to conduct free and fair elections. An election commissioner is appointed by the President of India on the recommendation of a three member selection committee headed by the Prime Minister of India and senior most election commissioner is appointed as chief election commissioner. The term of a CEC can be a maximum of six years or till he/she attains sixty five years of age. The Chief Election Commissioner is usually a member of the Indian Civil Service and mostly from the Indian Administrative Service.