Lettau (surname)

People with the surname Lettau include:

• Andre Lettau, German poker player
• Georg Lettau (1878–1951), German lichenologist
• Heinz Lettau (1909–2005), professor of meteorology at the University of Wisconsin
• Kevyn Lettau (born 1959), American jazz vocalist
• Reinhard Lettau (1929–1996), German-American writer and professor