Namesakes
Kostas Karamanlis
(m) 1956- 
Greek Prime Ministers 2004-2009
Kostas Simitis
(m) 1936-
Greek Prime Ministers 1996-2004
Kostas Mitroglou
(m) 1988-
Notable Athletes (soccer)
Kostas Katsouranis
(m) 1979-
Notable Athletes (soccer)
Kostas Manolas
(m) 1991-
Notable Athletes (soccer)
Konstantinos Tsiklitiras
(a.k.a. Kostas) (m) 1888-1913
Olympic Medalists 1908; 1912 high jump - standing; long jump - standing (silver/bronze/gold)
Kostas Kenteris
(m) 1973-
Olympic Medalists 2000 200 m (gold)
Chris Chelios
(middle name Kostas) (m) 1962-
Hall-of-Famers 2013 (ice hockey)
Notable Athletes (ice hockey)