Jason Smyth (born 4 July 1987) is an Irish sprint runner.
He competes in the T13 disability sport classification as he is legally blind, with his central vision being affected by Stargardt's disease; he also competes in elite non-Paralympic competition.
As of July 2014, Smyth holds T13 World records in the 100m and 200m events.
He was selected to represent Northern Ireland at the 2014 Commonwealth Games.
Deterioration in his vision meant that he was reassigned to the T12 classification in 2014, but he was subsequently reclassified back to T13 in 2015.