Fernström is a Swedish surname. Notable people with the surname include:
Bengt-Göran Fernström (born 1941), Swedish sprinter Eric K. Fernström (1901–1995), Swedish ship owner and businessman Fernström Prize Felix Fernström (1916–1991), Swedish bobsledder John Fernström (1897–1961), Swedish composer Kathlene Fernström (born 1986), Swedish association football player Linus Fernström (born 1987), Swedish ice hockey goaltender Madelyn Fernstrom, American physician, scientist and journalist