Kaarlo is a given name. Notable people with the name include:
Kaarlo Bergbom (1843–1906), Finnish theatre directorKaarlo Blomstedt (1880–1949), Finnish historian and archivistKaarlo Castrén (1860–1938), Prime Minister of FinlandKaarlo Edward Kivekäs (1866–1940), Finnish generalKaarlo Ekholm (1884–1946), Finnish gymnast who competed in the 1912 Summer OlympicsKaarlo Halttunen (1909–1986), Finnish actorKaarlo Heiskanen (1894–1962), Finnish general and Knight of the Mannerheim CrossKaarlo Juho Ståhlberg (1865–1952), Finnish jurist and academicKaarlo Kangasniemi (born 1941), former Finnish weightlifterKaarlo Koskelo (1888–1953), Finnish wrestler who competed in the 1912 Summer OlympicsKaarlo Kustaa Paasia (1883–1961), Finnish gymnast who competed in the 1908 Summer OlympicsKaarlo Leinonen (1914–1975), Finnish general and Minister of DefenceKaarlo Linkola (born Collan) (1888–1942), Finnish botanist and phytogeographerKaarlo Mäkinen (1892–1980), Finnish freestyle wrestler and Olympic championKaarlo Maaninka (born 1953), former Finnish long distance runnerKaarlo Mikkolainen (1883–1928), Finnish gymnast who competed in the 1908 Summer OlympicsKaarlo Rantanen (born 1988), Finnish football player currently playing for FC LahtiKaarlo Soinio (1888–1960), Finnish gymnast and amateur football (soccer) playerKaarlo Tuominen (1908–2006), Finnish steeplechase runnerKaarlo Uskela (1878–1922), Finnish writer, poet and anarchistKaarlo Vähämäki (born 1892), Finnish gymnast who competed in the 1912 Summer OlympicsKaarlo Väkevä (1909–1932), Finnish boxer who competed in the 1928 Summer OlympicsKaarlo Vasama (1885–1926), Finnish gymnast who competed in the 1912 Summer OlympicsKaarlo Wirilander (1908–1988), Finnish historian