Ioannis Ladas () (1920 – 16 October 2010) was a member of the Greek military junta of 1967–1974. He was born and raised in the village of Dirahi, Arcadia. In 1940, he graduated from the Hellenic Military Academy along with George Papadopoulos and Nikolaos Makarezos. He fought, as an officer, in the Greco-Italian War of 1940. On August 23, 1975 he was sentenced to life imprisonment by a special court set up for the trials of those involved in the dictatorship. He died on October 16, 2010.