Retzius

Retzius is a surname. Notable people with the surname include:


 * Anders Jahan Retzius (1742–1821), Swedish naturalist
 * Anders Retzius (1796–1860), Swedish anatomist; son of Anders Jahan Retzius
 * Gustaf Retzius (1842–1919), Swedish anatomist, liberal publicist; son of Anders Retzius