Mandl is a South German surname. Notable people with the surname include:
Alex J. Mandl (1943–2022), Austrian-American businessman Daniel Mandl (1891–1945), Czech civil engineer, inventor, student of anthroposophy, and Holocaust victim, father of Herbert Dragutin Mandl (1892–1959), Croatian mechanical engineer involved with the first trams in Zagreb Felix Mandl (1898–?), Croatian businessman of Austrian Jewish descent Franz Mandl (footballer) (1916–1988), Austrian footballer Franz Mandl (1923–2009), British physicist Friedrich Mandl (1900–1977), Austrian-Argentine businessman Herbert Thomas Mandl (1926–2007), Czechoslovak-German author, son of Daniel Jubilee Jenna Mandl (born 1984), Austrian figure skater Jürgen Mandl (born 1965), Austrian athlete Maria Mandl (1912–1948), Austrian Nazi SS commandant at Auschwitz, executed for war crimes Miklós Mandl, birth name of Nickolas Muray (1892-1965), Hungarian-born American photographer and fencer Peter Mandl (born 1947), Swedish sculptor Petr Mandl (1933–2012), Czech mathematician Thomas Mandl (born 1979), Austrian footballer Vladimír Mandl (1899–1941), Czechoslovak lawyer and space law pioneer
See also Mandel Mandle Joseph Mandl House, a historic house in Jerome, Idaho, United States