| Stefanos Stefanopoulos | |
| Office1: | Prime Minister of Greece |
| Term Start1: | 17 September 1965 |
| Term End1: | 22 December 1966 |
| Monarch1: | Constantine II |
| Predecessor1: | Ilias Tsirimokos |
| Successor1: | Ioannis Paraskevopoulos |
| Birth Date: | 3 July 1898 |
| Birth Place: | Pyrgos, Greece |
| Death Place: | Athens, Greece |
| Party: | Liberal Democratic Center |
Stefanos Stefanopoulos (Greek, Modern (1453-);: Στέφανος Στεφανόπουλος, 3 July 1898 – 4 October 1982) was a Greek politician, and served as Prime Minister of Greece from 1965 to 1966.
Stefanopoulos was born in Pyrgos, Elis. He was a moderate conservative and served as foreign minister during Alexandros Papagos' government. He even served as acting Prime Minister for a day after the latter's death on 4 October 1955.[1]
On 17 September 1965, he became Prime Minister of Greece during the period of the "Apostasia", supported by conservatives and defecting members of the Centre Union party. Unable to gain a parliamentary vote of confidence, his government fell on 22 December 1966. He stayed away from politics while the Greek military junta ruled 1967 until 1974. He tried to make a comeback into politics by forming a right-wing party but did not succeed in being elected in 1977.
He died from heart and respiratory issues, aged 84, in Athens.