Denker is a Dutch and German noun meaning "thinker". Notable people with the surname include:
Arnold Denker (1914–2005), American chess player Henry Denker (1912–2012), American novelist and playwright Lydia Denker (born 1982), German-Australian singer-songwriter Travis Denker (born 1985), American baseball player
Dencker Nils Dencker (born 1953), Swedish mathematician
Denkers Dirk Denkers, American soccer player
See also Denker Tournament of High School Champions, chess tournament Der Denker-Club (The Thinkers Club), cartoon based on a fictitious group of professors and scholars Denk (disambiguation) Dencker Denke