Somanahalli Mallaiah Krishna (Kannada: ಸೋಮನಹಳ್ಳಿ ಮಲ್ಲಯ್ಯ ಕೃಷ್ಣ), generally referred to as S. M. Krishna (born 1 May 1932) is the Minister of External Affairs and a member of the Indian Parliament from Karnataka in the Rajya Sabha. He was the Chief Minister of Karnataka from 1999 to 2004 and the Governor of Maharashtra from 2004 to 2008.
S.M. Krishna is the son of S.C. Mallaiah, Krishna born in a village Somanahalli in Maddur Taluk of Mandya District. He completed his Bachelor's in Arts from Maharaja's College, Mysore and obtained a Law degree from University Law College, which was then known as Government Law College in Bangalore . Krishna studied in the United States, graduating from the Southern Methodist University in Dallas, Texas and The George Washington University Law School in Washington D.C, where he was a Fulbright Scholar. Soon after his return to India, he got elected to the Karnataka legislative assembly in 1962. .
He was married to Prema on 29 April 1964 and has two daughters. Krishna is an avid sportsperson and plays tennis regularly.