Krøyer or Kroyer is a surname and can refer to:
Henrik Nikolai Krøyer (1799–1870), Danish zoologist Peder Severin Krøyer (1851–1909), Norwegian-Danish painter Marie Krøyer (1867–1940), Danish painter Hans Ernst Krøyer (1798–1879), Danish composer Bill Kroyer, American animator and director
See also
Krøyer's deep sea angler fish