Shilendra Kumar Singh or S.K. Singh was an Indian diplomat. He was Governor of Arunachal Pradesh from December 2004 to September 2007 and Governor of Rajasthan from September 2007 until he died in office in December 2009.

The foreign secretary of India is the top diplomat of India and administrative head of the Ministry of External Affairs. This post is held by an Indian foreign service officer of the rank of secretary to the government of India. Vinay Mohan Kwatra is an Indian diplomat and currently serving as the Foreign Secretary of India from May 2022, succeeding Harsh Vardhan Shringla.