Kostis () is a hypocorism of the Greek name Konstantinos (Constantine). Notable people with the name include:
Given name Kostis Adosidis Pasha (1818–1895), Prince of Samos Kostis Chatzidakis (born 1965), Greek politician Kostis Gimossoulis (born 1960), Greek poet and novelist Costis Gontikas (born 1994), Greek professional basketball player Kostis Gontikas (born 1934), Greek politician Kostis Palamas (1859–1943), Greek poet Kostis Papagiorgis (1947–2014), Greek essayist, columnist, translator of philosophical studies Kostis Protopapas, American opera artistic director of Greek origin Konstantinos "Kostis" Stephanopoulos (1926–2016), Greek politician, President of Greece from 1995 to 2005
Surname Christos Kostis (born 1972), Greek football (soccer) player Peter Kostis (born 1946), American golf analyst and instructor Tasos Kostis (born 1951), Greek actor
See also Costi (disambiguation) Kosti (disambiguation) Kostas (disambiguation)