Retzius
The taxon authority Retzius may refer to:
- Anders Adolf Retzius (1796–1860; A.Retz.), Swedish zoologist
- Anders Jahan Retzius (1742–1821; Retz.), Swedish botanist, lichenologist
- Gustaf Retzius (1842–1919; G.Retz.), Swedish botanist
The taxon authority Retzius may refer to: