Jaan is an Estonian masculine, a cognate of the English-language given name John. People named Jaan include: Jaan Anvelt (1884–1937), Estonian communist revolutionary Jaan Arder (born 1952), Estonian singer Jaan Ehlvest (born 1962), Estonian chess player Jaan Eigo (1866–1946), Estonian politician Jaan Eilart (1933–2006), Estonian biologist Jaan Einasto (born 1929), Estonian astrophysicist Jaan Hargel (1912–1966), Estonian conductor, music teacher, oboe player and flautist Jaan Eslon (1952–2000), Estonian-Swedish chess player Jaan Hünerson (1882–1942), Estonian agronomist and politician Jaan Isotamm (1939–2014), Estonian poet Jaan Jaago (1887–1949), Estonian wrestler Jaan Jung (1835–1900), Estonian educator, archeologist and historian Jaan Jüris (born 1977), Estonian ski jumper Jaan Kalviste (1898–1936), Estonian chemist, educator, and translator Jaan Kaplinski (1941–2021), Estonian poet, philosopher, and culture critic Jaan Kärner (1891–1958), Estonian poet and writer Jaan Kiivit Sr. (1906–1971), Estonian Archbishop Jaan Kiivit, Jr. (1940–2005), Estonian Archbishop Jaan Kikkas (1892–1944), Estonian weightlifter Jaan Kirsipuu (born 1969), Estonian road bicycle racer Jaan Klõšeiko (1939–2016), Estonian printmaker and photographer Jaan Kolberg (born 1958), Estonian film director and producer Jaan Kokk (1903–1942), Estonian politician Jaan Kriisa (1882–1942), Estonian lawyer and politician Jaan Kross (1920–2007), Estonian contemporary writer Jaan Kruus (1884–1942), Estonian military General Jaan Kruusvall (1940–2012), Estonian writer and playwright Jaan Kundla (born 1937), Estonian politician Jaan Laaman (born 1948), American member of the United Freedom Front Jaan Lattik, (1878–1967), Estonian politician and writer Jaan Lepp (1895–1941), Estonian track and field athlete and soldier Jaan J. Leppik (born 1969), Estonian clergyman and politician Jaan Lippmaa (1942–2021), Estonian engineer and politician Jaan Lõo (1872–1939), Estonian Supreme Court judge, poet and politician Jaan Lüllemets (1932–2004), Estonian politician Jaan Maide (1896–1945), Estonian Army officer and commander Jaan Manitski (born 1942), Estonian politician Jaan Mark (born 1951), Estonian politician Jaan Masing (1875–1948), Estonian politician Jaan Miger (1859–1940), Estonian politician Jaan Patterson (born 1975), German American writer and composer, founder of the netlabel Surrism-Phonoethics Jaan Pehk (born 1975), Estonian writer, singer and guitarist Jaan Piiskar (1883–1942), Estonian educator and politician Jaan Põdra (1894–1942), Estonian politician Jaan Port (1891–1951), Estonian botanist Jaan Poska (1866–1920), Estonian barrister and politician Jaan Puhvel (born 1932), Estonian-American Indo-Europeanist Jaan Puidet (born 1992), Estonian basketball player Jaan Rääts (1932–2020), Estonian film score composer Jaan Rannap (born 1931), Estonian children's writer Jaan Raudsepp (1873–1945), Estonian politician Jaan Rekkor (born 1958), Estonian actor Jaan Ruus (1938–2017), Estonian film critic, journalist and film editor Jaan Sarv (1877–1954), Estonian mathematician and pedagogue Jaan Soots (1880–1942), Estonian military commander