Helena Kantakouzene
| Helena Kantakouzene | |
|---|---|
| Empress consort of the Byzantine Empire | |
| Tenure | 28 May 1347 – 12 August 1376 |
| Tenure | 1 July 1379 – 14 April 1390 |
| Tenure | 17 September 1390 – 16 February 1391 |
| Born | 1333 Byzantine Empire |
| Died | 10 December 1396 (aged 62–63) Hagia Martha, Constantinople, Byzantine Empire (modern-day Istanbul, Turkey) |
| Spouse | John V Palaiologos |
| Issue Detail | Andronikos IV Palaiologos Manuel II Palaiologos Theodore I Palaiologos, Lord of Morea Michael Palaiologos |
| House | Kantakouzenos |
| Father | John VI Kantakouzenos |
| Mother | Irene Asanina |
Helena Kantakouzene (Greek: Ἑλένη Καντακουζηνή, romanized: Eléni Kantakouzēne; 1333 – 10 December 1396) was the Empress consort of John V Palaiologos of the Byzantine Empire. She served as Regent during the absence of her son Manuel II in 1393.