A positron is an elementary particle of antimatter.
Positron may also refer to: Positron (video game), the 1983 video game published by Micro Power Positron! Records, a Chicago-based independent record label Positron Corporation, an American nuclear medicine healthcare company "Positron", a 1993 trance track by Cygnus X Positron, a bicycle shifting system from Shimano Positron, a software development platform by Posit PBC
See also Positron emission, the radioactive decay Positronic brain, the fictional device conceived by Isaac Asimov