Namesakes
Gennaios Kolokotronis
(a.k.a. Ioannis) (m) 1803-1868 
Greek Prime Ministers 1862
Giannis Fetfatzidis
(a.k.a. Ioannis) (m) 1990-
Notable Athletes (soccer)
Giannis Maniatis
(a.k.a. Ioannis) (m) 1986-
Notable Athletes (soccer)
Ioannis Andreou
(m) 18xx-19xx
Olympic Medalists 1896 swimming - 1200 m freestyle (silver)
Ioannis Grivas
(m) 1923-2016
Greek Prime Ministers 1989
Ioannis Kolettis
(m) 1773-1847
Greek Prime Ministers 1834-1835; 1844-1847
Ioannis Malokinis
(m) 1880-1942
Olympic Medalists 1896 swimming - 100 m freestyle for sailors (gold)
Ioannis Metaxas
(m) 1871-1941
Greek Prime Ministers 1936-1941
Ioannis Paraskevopoulos
(m) 1900-1984
Greek Prime Ministers 1963-1964; 1966-1967
Ioannis Persakis
(m) 1877-1943
Olympic Medalists 1896 triple jump (bronze)
Ioannis Sarmas
(m) 1957-
Greek Prime Ministers 2023
Ioannis Theodoropoulos
(m) 18xx-19xx
Olympic Medalists 1896 pole vault (bronze)
Ioannis Theotokis
(m) 1880-1961
Greek Prime Ministers 1950