Ruotsalainen is a Finnish surname (literally meaning "a Swede", but as a name originally referring to the adherents of Lutheran Christianity in Karelia). It may refer to: People Arttu Ruotsalainen (born 1997), ice hockey forward Gabriel Ruotsalainen (1893–1984), long-distance runner Paavo Ruotsalainen (1777–1852), farmer and lay preacher Pirjo Ruotsalainen, orienteering competitor Reijo Ruotsalainen (born 1960), ice hockey defenceman Satu Ruotsalainen (born 1966 ), heptathlete Veikko Ruotsalainen (1908–1986), skier Places Ruotsalainen (lake) Finnish-language surnames Surnames of Finnish origin