Henkel is a surname. Notable people with the surname include:
Andrea Henkel (born 1977), German biathlete
Caesar Carl Hans Henkel (1837-1913), German-born South African forester, cartographer, painter, soldier and botanist
Ernest Henkel (1873-1935), manager of the Metropolitan Opera
Heike Henkel (born 1964), German former athlete
Henner Henkel (1915-1942), German tennis player
Herbert L. Henkel, CEO of Ingersoll Rand
John Spurgeon Henkel (1871-1962), South African botanist and forester
Kim Henkel, American screenwriter, film director and producer
Kim Henkel, creator of ZTreeWin
Manuela Henkel (born 1974), German cross-country skier
Rainer Henkel (born 1964), former freestyle swimmer
