Ignác Martinovics (Serbo-Croatian: Ignjat Martinovic, ????? ??????????; 20 July 1755 – 20 May 1795) was a Hungarian philosopher, writer and a leader of the Hungarian Jacobin movement.
He was condemned to death for high treason and beheaded on 20 May 1795, along with count Jacob Sigray (Hungarian: Sigray Jakab), Ferenc Szentmarjay, Joseph Hajnoczy (Hungarian: Hajnóczy József) and others.