Haass

Haass or Haaß is a German surname. Notable people with the surname include:


 * Christian Haass (born 1960), German biochemist
 * Friedrich Joseph Haass (1780–1853), Russian physician
 * Lillian K. Haass, YWCA worker in Shanghai, China, between 1914 and 1945.
 * Michael Haaß (born 1983), German handball player
 * Richard N. Haass (born 1951), American diplomat