Hariharan may refer to:
- Hariharan (singer) (born 1955), ghazal and playback singer from India
- Hariharan (director), Malayalam film director
- Githa Hariharan (born 1954), Indian author and editor based in New Delhi. Her first novel, The Thousand Faces of Night, won the Commonwealth Writers' Prize in 1993
- Hariharan Srinivasan (born 1929), born on September 7, 1929, in South India and was an Indian orthopedic surgeon who worked primarily with leprosy. He retired in 2008
- Krishna Hariharan (born 1955), Indian Test cricket umpire
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