Härkönen is a Finnish surname. Notable people with the surname include:
- Armas Härkönen (1903 - 1981), Finnish politician
- Anna-Leena Härkönen (b. 1965), Finnish writer
- Arto Härkönen (b. 1959), Finnish javelin thrower
- Jorma Härkönen (b. 1956), Finnish runner
- Kari Härkönen (b. 1959), Finnish cross country skier