Aaltonen is a surname originating in Finland (in Finnish, it means "small wave"). It may also refer to, alphabetically:
Ali Aaltonen (1884-1918), Lieutenant in the Imperial Russian armyArvo Aaltonen (1892–1949), Finnish swimmerErkki Aaltonen (1910–1990), Finnish composerJani Aaltonen (born 1990), Finnish footballerJuhamatti Aaltonen (born 1985), Finnish ice hockey playerJuhani Aaltonen (born 1935), Finnish jazz musicianLasse Aaltonen, World War II aceMika Aaltonen (born 1965), former Finnish football (soccer) playerMikael Aaltonen, Finnish ice hockey playerMinna Aaltonen (born 1966), Finnish actressNico Aaltonen, Finnish ice hockey playerPaavo Aaltonen (1919–1962), Finnish gymnastPäivi Aaltonen (born 1952), Finnish female archerRauno Aaltonen (born 1938), Finnish former professional rally driverRemu Aaltonen, Finnish member of the Hurriganes rock bandRisto Aaltonen (born 1939), Finnish actorTimo Aaltonen (born 1969), Finnish shot putterUma Aaltonen (1940–2009), Finnish author, journalist and former MEPVeikko Aaltonen (born 1955), Finnish director, editor, sound editor, production manager and film and television writer and actorWäinö Aaltonen (1894–1966), Finnish artist and sculptorYrjö Aaltonen (1916–1979), Finnish director of photography and actor