Metron can refer to:
- Metron (skipper), a genus of butterflies in the grass skipper family
- Metron (comics), a character created by Jack Kirby for his Fourth World series in DC Comics
- Metron (Star Trek), a fictional species in Star Trek: The Original Series
- Alien Metron, a race of alien creatures originally featured in the 1967 tokusatsu TV series, Ultra Seven
- Metron (journal), an international journal of statistics founded in 1920 by Italian statistician Corrado Gini
- metron, in Heim theory, a (two-dimensional) quantum of (multidimensional) space, a unit of measure
- Metron Aviation, an air traffic flow management company
- Metron S, a synonym for Iproheptine, an antihistamine
- Metron, a typeface for Prague Metro by Jiří Rathouský
- Metron of Macedon, also known as Metron of Pydna, a general of Alexander the Great
- Metron, plural metra, another word for a metrical foot; see Foot (prosody)
- Metron (software), veterinarian, medical, and dental digital radiography X-Ray scanning software