Gessler or Geßler is a German surname. Notable people with the surname include:
Albrecht Gessler, 14th century Austrian bailiff connected with the William Tell legend Amaka Gessler (born 1990), New Zealand swimmer Friedrich Leopold von Geßler (1688–1762), Prussian field marshal Doc Gessler (1880–1924), American baseball player Otto Gessler (1875–1955), German politician Magdalena Gessler (born 1953), Polish restaurateur Scott Gessler (born 1965), American lawyer and Secretary of State of the U.S. State of Colorado
See also Gesser Gessler (disambiguation)