Lennart is a variant of Leonard most common in Sweden. Notable people named Lennart are:
As a surname:
Isobel Lennart (1915–1971), American screenwriter and playwrightSonja de Lennart (born 1920), European fashion designerAs a given name:
Lennart Alexandersson (born 1947), Swedish footballer, father of football players Niclas and Daniel AlexanderssonLennart Åqvist (born 1932), Swedish logicianLennart Askinger (1922–1995), Swedish football defenderLennart Atterwall (1911–2001), Swedish javelin thrower and European championLennart Augustsson, Swedish computer scientistLennart Axelsson (musician) (born 1941), Swedish trumpet playerLennart Axelsson (politician) (born 1953), Swedish politician, member of the RiksdagLennart Beijer (born 1947), Swedish Left Party politician, member of the Riksdag 1994–2006Lennart Bengtsson, meteorologist currently interested in global climate modellingLennart Bergelin (1925–2008), Swedish tennis player and coachLennart Bernadotte, Count of Wisborg (1909–2004), Prince of Sweden and Duke of Småland from 1909 to 1932Lennart Bodström (born 1928), Swedish politician, Minister for Foreign Affairs from 1982 to 1985Lennart Bohman (1909–1979), Swedish boxerLennart Bunke (1912-1988), Swedish football forwardLennart Carleson (born 1928), Swedish mathematicianLennart Carlström (born 1943), Swedish orienteering competitorLennart Daléus (born 1946), Swedish politician, leader of the Swedish Centre Party from 1998 to 2001Lennart Dozzi (1910–1987), Swedish canoeistLennart Ebbinge (born 1956), former Swedish handball playerLennart Ekdahl (1912–2005), Swedish sailorLennart Eriksson (musician) (born 1956), the bass player in the rebellious Swedish punk rock band Ebba GrönLennart Eriksson (handballer) (born 1944), former Swedish handball playerLennart Fremling (born 1946), Swedish Liberal People's Party politicianLennart Geijer (born 1909), Swedish politician and lawyerLennart Ginman (born 1960), Danish bassist, composer and music producerLennart Green (born 1941), world champion close-up/card magicianLennart Gripenberg (1852–1933), Finnish politicianLennart Gustavsson, (born 1954), Swedish Left Party politicianLennart Hannelius (1893–1950), Finnish sport shooterLennart Hartmann (born 1991), German footballerLennart Hedmark (born 1944), retired Swedish track and field athleteLennart Hedquist (born 1943), Swedish politician of the Moderate PartyLennart Heimer (1930–2007), Swedish-American neuroscientist and educatorLennart Hellsing (born 1919), son of the merchant Paul Hellsing and his wife SigridLennart Hjulström (born 1938), Swedish actor and directorLennart Hyland (1919–1993), Swedish TV-show host and journalistLennart Jähkel (born 1956), Swedish actorLennart Johansson (born 1929), the president of the Union of European Football Associations from 1990 to 2007Lennart Johansson (ice hockey) (1941–2010), Swedish professional ice hockey playerLennart Johnsson (born 1944), Swedish computer scientist and engineerLennart Klingström (1916–1994), Swedish sprint canoeistLennart Klockare (born 1945) a Swedish social democratic politicianLennart Kollberg, fictional character in the books by Maj Sjöwall and Per WahlööLennart Kollmats (born 1943), Swedish Liberal People's Party politicianLennart Koskinen (born 1944), clergyman in the Church of Sweden, serving as Bishop in VisbyLennart Larsson (cross-country skier) (born 1930), Swedish cross-country skierLennart Larsson (footballer) (born 1953), former Swedish footballerLennart Lindroos (born 1886), Finnish breaststroke swimmerLennart Ljung (born 1946), Swedish Professor in the Chair of Control Theory at Linköping University since 1976Lennart Ljung (1921–1990), Swedish Army generalLennart Magnusson (1924–2011), Swedish fencerLennart Mathiasen (born 1948), Danish sprint canoeist who competed in the early 1970sLennart Meri (1929–2006), Estonian writer, film director and statesman, President of Estonia from 1992 to 2001Lennart Nilsson (born 1922), Swedish photographer and scientistLennart Olsson, (born 1961), Swedish zoologist & embryologist, professor of comparative zoology at the Friedrich Schiller University of JenaLennart Petrell (born 1984), Finnish professional ice hockey playerLennart Poettering, computer programmerLennart Rodhe (1916–2005), Swedish artist, painter and printmakerLennart Rönnback (1905–2007), Finnish White Guard veteran of the Finnish Civil War of 1918Lennart Roslund (born 1946), Swedish sailorLennart Samuelsson (born 1924), former football player from SwedenLennart Sandin (1919–1991), Swedish bobsledder who competed in the early 1950sLennart Skoglund, (1929–1975), Swedish football playerLennart Söderberg (born 1941), Swedish football manager and former football playerLennart Steffensen (born 1977), Norwegian football midfielderLennart Stekelenburg (born 1986), Dutch swimmer who is specialized in breaststrokeLennart Strand (1921–2004), Swedish middle distance runner, 1500 m silver medallist at the 1948 London Summer OlympicsLennart Strandberg (1915–1989), Swedish athlete who competed mainly in the 100 metres at the 1936 Olympics in BerlinLennart Svedberg (1944–1972), Swedish ice hockey defencemanLennart Swahn (1927–2008), Swedish journalist and radio and television personality.Lennart Thy (born 1992), German footballerLennart Torstenson, Count of Ortala, Baron of Virestad (1603–1651), Swedish Field Marshal and military engineerLennart Viitala (1921–1966), Finnish freestyle wrestler and Olympic championLennart von Post (1884–1951), Swedish naturalist and geologistLennart Wass (born 1953), Swedish football managerLennart Wing (born 1935), Swedish former international footballer who played in defence