Hartono is a surname. Notable people with the surname include:
- Robert Budi Hartono (born 1940), an Indonesian businessman
- Rudy Hartono (born 1949), an Indonesian badminton player
- Eddy Hartono (born 1964), an Indonesian badminton player
- Nathan Hartono (born 1991), a Singaporean singer and actor
- Arianne Hartono (born 1996), a Dutch tennis player
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