Kiesler is a surname. Notable people with the surname include:
Brigitte Kiesler (1924–2013), German gymnast Charles Kiesler (1934–2002), American psychologist and university administrator Frederick John Kiesler (1890–1965), Austrian-American architect Kenneth Kiesler (born 1953), American symphony orchestra and opera conductor Sara Kiesler, computer scientist Hedy Lamarr (1914–2000), Austrian-born American film actress and inventor, born Hedwig Eva Maria Kiesler
See also Kesler Keisler Kieler (disambiguation) Kieser Katrin Kieseler, German-born Australian sprint canoer