Kuusisto is a Finnish surname. As of 2013, there are more than 10,000 Finnish people registered with this surname.^[1]

Some notable people with this surname include:

• Ilkka Kuusisto (born 1933), Finnish composer of popular opera
• Jarmo Kuusisto (born 1961), Finnish ice hockey player
• Jaakko Kuusisto (1974—2022), Finnish violinist and composer, son of Ilkka Kuusisto
• Jesse-Juho Kuusisto (born 1991), Finnish football player
• Mika Kuusisto (born 1967), Finnish cross country skier
• Pekka Kuusisto (born 1976), Finnish violinist, son of Ilkka Kuusisto
• Stephen Kuusisto (born 1955), American poet
• Taneli Kuusisto (1905–1988), Finnish composer, music critic, teacher and choir leader
• Timo Kuusisto (born 1959), Finnish pole vaulter