Theiss

Theiss may refer to:

Companies

 * Theiss Aviation, an American aircraft manufacturer
 * Konrad Theiss Verlag, a German book publishing company

People

 * Brooke Theiss (born 1969), American actress
 * Christine Theiss (born 1980), German female world champion in professional full contact kickboxing
 * Mike Theiss (born 1978), American photographer
 * William Ware Theiss (1930–1992), American costume designer
 * Theiss., taxonomic author abbreviation of Ferdinand Theissen (1877–1919), German-Austrian mycologist

Places

 * Lake Theiss or Lake Tisza
 * Theiss River or Tisza