György Lahner (Hungarian: Lahner György, Láhner György, German: Georg Lahner; 6 October 1795, Necpál (present-day Necpaly, Slovakia) - 6 October 1849, Arad) was a honvéd general in the Hungarian Army.
He was executed for his part in the Hungarian Revolution of 1848, and is considered one of the 13 Martyrs of Arad.