Lothar is a modern form of the Germanic Chlothar or Hlothar. Notable people with the surname include:
Ernst Lothar (1890–1974), German writer
Hanns Lothar or Hanns Lothar Neutze (1929–1967), German actor
Mark Lothar (1902–1985), German composer
Rudolf Lothar (1865–after 1933), German writer
Susanne Lothar (1960-2012), German actress
Lothar Ahrendt (born 1936), former interior minister of the German Democratic Republic
Lothar Bolz (1903-1986), East German politician
Lothar Collatz (1910–1990), German mathematician
Lothar Hause (born 1955), East German football player
Lothar Kurbjuweit (born 1950), East German football player
Lothar Lindtner (1917–2005), Norwegian actor
Lothar Machtan (born 1949), German historian, writer
Lothar Malskat (1913–1988), German painter and art restorer
Lothar Matthäus born 1961, German football player and manager, 1990 World Cup winner
Lothar Matthes (born 1947), German diver
Lothar de Maizière, last Prime Minister of East Germany (1990)
Lothar Milde (born 1934), East German athlete who competed mainly in the discus throw
Lothar Mendes (1894–1974), German screenwriter and film director
Lothar Metz (born 1939), German wrestler and Olympic medalist
Lothar Müthel (1896–1964), German stage and film actor and director
Lothar von Richthofen (1894–1922), fighter ace and younger brother of top-scoring ace Manfred von Richthofen (the Red Baron)
Lothar von Trotha (1848–1920), a German commander who instigated the Herero massacre
Lothar – comic character, sidekick to Mandrake the Magician created by Lee Falk
Lothar – a Nazi spy for Germany, sidekick to Nazi spy Neville Sinclair in the Rocketeer
Lothar Weiser – a spy for Socialist East Germany in Arnaldur Indriðason's book, The Draining Lake
Anduin Lothar – a historical warrior in the Warcraft Universe
Lothar Wikipedia (Text) CC BY-SA