Hietanen is a Finnish surname. Notable people with the surname include:
Helena Hietanen (born 1963), Finnish sculptorJanne Hietanen (born 1978), Finnish footballerJuuso Hietanen (born 1985), Finnish ice hockey playerKonsta Hietanen (born 1984), Finnish footballerMatti Hietanen (born 1983), Finnish volleyball playerMika Hietanen (born 1968), Finnish cyclistMikko Hietanen (1911–1999), Finnish long-distance runnerValtteri Hietanen (born 1992), Finnish ice hockey playerYrjö Hietanen (1927–2011), Finnish sprint canoeist