Carl Gustav refers to two Kings of Sweden:
Charles X Gustav (1622–1660), King of Sweden Carl XVI Gustaf (born 1946), King of Sweden
Carl Gustav can also refer to:
People
Politicians Karl Gustav Abramsson (born 1947), Swedish politician Carl Gustaf Ekman (1872–1945), Swedish politician Carl Gustaf Löwenhielm (1790–1858), Swedish diplomat Carl Gustaf Nordin (1749–1812), Swedish statesman, historian and ecclesiastic Carl Gustaf Tessin (1695–1770), Swedish politician Karl Gustaf Westman (1876–1944), Swedish historian and politician
Athletes Carl Gustaf Lewenhaupt (1884–1935), Swedish horse rider Karl Gustaf Vinqvist (1883–1967), Swedish gymnast
Artists Carl Gustaf Hellqvist (1851–1890), Swedish painter Carl Gustaf Pilo (1711–1793), Swedish painter Carl Gustav Carus (1789–1869), German physiologist and painter
Entertainers Carl-Gustaf Lindstedt (1921–1992), Swedish actor Karl Gustav Ahlefeldt (1910–1985), Danish film actor
Medicine Carl Gustav Carus (1789–1869), German physiologist and painter Karl Gustav Himly (1772–1837), German surgeon and optician Carl Gustav Jung (1875–1961), Swiss founder of analytical psychology
Military leaders Carl Gustaf Armfeldt (1666–1736), Swedish military commander Carl Gustaf Emil Mannerheim (1867– 1951), Finnish military commander and statesman Carl Gustav Fleischer (1883–1942), Norwegian military commander Carl Gustav Rehnskiöld (1651–1722), Swedish military commander Carl Gustaf von Nieroth (died 1712), Swedish military commander Carl-Gustaf Ståhl (1920–2016), Swedish military commander Carl Gustaf Wrangel (1613–1676), Swedish military commander Karl Gustaf Brandberg (1905–1997), Swedish military commander Karl Gustav von Löwenwolde (died 1735), Russian diplomat and military commander
Science and medicine Carl Gustaf Mosander (1797–1858), Swedish chemist Carl-Gustaf Regårdh (1921–2009), Swedish engineer Carl-Gustaf Rossby (1898–1957), Swedish-American meteorologist Carl Gustaf Thomson (1824–1899), Swedish entomologist Carl Gustaf von Mannerheim (1797–1854), Finnish entomologist Carl Gustav Witt (1866–1946), German astronomer
Other persons Carl Gustaf Hellquist (1896–1973), Swedish jurist Carl Gustav Jacob Jacobi (1804–1851), German mathematician Karl Gustav Homeyer (1795–1874), German jurist Carl Gustaf von Rosen (1909–1977), Swedish aviator Carl Gustaf Wolff (1800–1868), Finnish shipowner and businessman
Weaponry Carl Gustafs Stads Gevärsfaktori, a Swedish armaments company Carl Gustaf 20 mm recoilless rifle, an anti-tank weapon Carl Gustaf 84 mm recoilless rifle, an anti-tank weapon Carl Gustaf m/45, a submachine gun