Somanahalli Mallaiah Krishna (born 1 May 1932) is an Indian politician who served as Minister of External Affairs of India from 2009 to October 2012. A member of the Indian Parliament in the Rajya Sabha, Krishna was the 16th Chief Minister of Karnataka from 1999 to 2004 and the 19th Governor of Maharashtra from 2004 to 2008.
S. M. Krishna is son of S.C. Mallaiah. He was born in a village named Somanahalli in the Maddur Taluk of Mandya District to a Vokkaliga(ಒಕ್ಕಲಿಗ) family. 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 was elected to the Karnataka Legislative Assembly in 1962.
He is married to Prema. They have two daughters. His son-in-law is Siddarth Hegde, who is a businessman.
Krishna started his political career with Praja Socialist Party in the year 1962.He had won against a prominent politician from Congress for whom Pandit Jawaharlal Nehru had campaigned in Maddur.He served multiple terms as an MP from the Mandya district of Karnataka starting from 1968 in the 4th, 5th, 7th and 8th Lok Sabha.In 1968 he was influential in reconciliation between members of the Indian National Congress and Praja Socialist Party.He later joined the Congress and served as minister under Indira Gandhi between 1983–84 and Rajiv Gandhi between 1984 and 1985 as minister of state for industry and finance respectively. He was member of the Rajya Sabha in the years 1996 and 2006. He was member of the Karnataka Legislative Assembly and council at different times. Between 1989 and 1992 he was Speaker of the Karnataka Legislative Assembly and Deputy Chief Minister of Karnataka.