Jaan (given name)

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 (1952–2014), 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 Kurn (1893–1981), Estonian teacher, poet and translator
 * Jaan Laaman (born 1948), Estonian-born 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 Luik (born 1953), Estonian sculptor
 * 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 Murro (1903–1969), Estonian editor, journalist and 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 (1931–2023), 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
 * Jaan Tallinn (born 1972), Estonian programmer
 * Jaan Talts (born 1944), Estonian weightlifter
 * Jaan Tätte (born 1964), Estonian playwright, poet, actor, and singer
 * Jaan Teemant (1872–?), Estonian lawyer and politician
 * Jaan Tiidemann (born 1971), Estonian architect
 * Jaan Tõnisson (1868–?), Estonian statesman
 * Jaan Toomik (born 1961), Estonian video artist and a painter
 * Jaan Tooming (born 1946), Estonian actor, stage and film director and writer
 * Jaan Treumann (1881–1941), Estonian Lutheran clergyman, educator and politician
 * Jaan Usin (1887–1941), Estonian Navy commander
 * Jaan Vain (1886–1942), Estonian lawyer and politician
 * Jaan Valsiner (born 1951), Estonian-American psychologist

Fictional characters
 * Jaan Tatikas, protagonist in the Eduard Bornhöhe's novel Tallinna narrid ja narrikesed, who has become a well-known stereotype in Estonian culture