Martin Heydon (born 9 August 1978) is an Irish Fine Gael politician who has served as Minister of State at the Department of Agriculture, Food and the Marine with responsibility for Research & Development, Farm Safety and New Market Development since July 2020. He has been a Teachta Dála (TD) for the Kildare South constituency since 2011. He previously served as the Chairman of the Fine Gael Parliamentary Party from 2016 to 2020.