Ezequiel Martínez Estrada (September 14, 1895 – November 4, 1964) was an Argentine writer, poet, essayist, and literary critic.
An admired biographer and critic, he was often political in his writings, and was a confirmed anti-Peronist.
While in his middle years he was identified with the ideas of Nietzsche or Kafka, in his last years he was closely identified with the Cuban revolution and Fidel Castro.