Laakso is a Finnish surname. Notable people with the surname include:
Aleksi Laakso (born 1990), Finnish ice hockey defenceman Eric Laakso (1956–2010), American football player Jaakko Laakso (born 1948), Finnish politician Juhani Laakso (1942–2014), Finnish sports shooter Juho Laakso (1854–1915), Finnish tenant farmer and politician Leo Laakso (1918–2002), Finnish ski jumper Martti Laakso (born 1943), Finnish wrestler Matti Laakso (1939–2020), Finnish wrestler Rob Laakso, American musician, record producer and engineer Sheikki Laakso, Finnish politician Tapio Laakso (born 1985), Finnish ice hockey defenceman Teemu Laakso (born 1987), Finnish ice hockey defenceman