Grigoris Pieris Afxentiou (Greek: Γρηγόρης Πιερής Αυξεντίου; 22 February 1928 – 3 March 1957) was a Greek-Cypriot insurgent leader who led campaigns against the British colonial government as a member of EOKA.

[4] He was discharged from the ranks of the Greek Army on 15 November 1953 and returned to Cyprus, where he helped his father with his business by working as a taxi driver.

[2] It was Grigoris Afxentiou who first thought of obtaining explosives from the sea bed, in shallow waters off the coast of Famagusta, as used by local fishermen to dynamite fish.

Known by the code name Zidhros (Ζήδρος), since the day of his attacks, he was top of the list of most wanted men by the colonial government.

[10] During October 1955, on the day after Field Marshal Harding's arrival on Cyprus, Afxentiou raided Lefkoniko Police Station in broad daylight and seized the entire armoury stored there.

[12] On 3 March 1957, after a Cypriot informant had betrayed his location, British Army troops surrounded Afxentiou outside his secret hideout near the Machairas Monastery near Lazanias.

Afxentiou then used his submachine gun to kill a corporal of the Duke of Wellington's Regiment before dying after the Royal Engineers poured petrol into his hideout and set it on fire.