Carl Gustaf Emil Mannerheim (1867– 1951), Finnish military commander and statesman

Carl XVI Gustaf of Sweden (born 1946), King of Sweden

Charles X Gustav of Sweden (1622–1660), King of Sweden

Carl Gustaf Pilo (1711–1793), Swedish painter

Carl Gustav recoilless rifle, anti-tank weapon developed by Bofors Carl Gustaf

Carl Gustav Jacob Jacobi (1804-1851), German mathematician

Carl Gustaf Mosander (1797–1858), Swedish chemist

Carl-Gustaf Rossby (1898–1957), Swedish-American meteorologist

Carl Gustav M/45, submachine gun developed by Bofors Carl Gustaf

Carl Gustaf Ekman (1872–1945), Swedish politician

Carl Gustaf Tessin (1695-1770), Swedish politician

Carl Gustaf von Rosen (1909–1977), Swedish aviator

Carl Gustaf Nordin (1749-1812), Swedish statesman, historian and ecclesiastic

Carl Gustaf Wrangel (1613-1676), Swedish military commander

Carl Gustaf Armfeldt (1666-1736), Swedish military commander

Carl Gustaf Hellqvist (1851–1890), Swedish painter

Carl Gustaf Wolff (1800-1868), Finnish shipowner and businessman

Carl Gustaf von Mannerheim (1797–1854), Finnish entomologist

Karl Gustav Himly (1772-1837), German surgeon and optician

Bofors Carl Gustaf, Swedish armorment company

Karl Gustav Homeyer (1795-1874), German jurist

Karl Gustav Ahlefeldt (1910-1985), Danish film actor

Carl Gustaf von Nieroth (died 1712), Swedish military commander

Karl Gustaf Westman (1876–1944), Swedish historian and politician

Carl-Gustaf Lindstedt (1921–1992), Swedish actor

Carl Gustaf Lewenhaupt (1884-1935), Swedish horse rider

Karl Gustav von Löwenwolde (died 1735), Russian diplomat and military commander

Carl Gustav Witt (1866–1946), German astronomer

Karl Gustaf Vinqvist (1883-1967), Swedish gymnast

Carl Gustaf Löwenhielm (1790-1858), Swedish diplomat

Carl Gustaf Thomson (1824–1899), Swedish entomologist

Karl Gustav Abramsson (born 1947), Swedish politician