Kostas or Costas () is a Greek given name and surname. As a given name, it can be a hypocorism for Konstantinos (Constantine).
Given name Kostas Antetokounmpo (born 1997), Greek basketball player Costas Azariadis (born 1943), Greek economist Kostas Biris (1899–1980), Greek architect Costas Georgiou (1951–1976), Greek Cypriot mercenary Kostas Lazarides (born 1949), aka Kostas (songwriter), Greek-American country music songwriter Costas Mandylor (born 1965), Greek Australian actor Kostas Papanikolaou (born 1990), Greek basketball player Costas Rigas (born 1944), Greek basketball player Costas Simitis (1936–2025), Prime Minister of Greece Kostas Hatzichristos (1921–2001), Greek actor Kostas Karamanlis (born 1956), former Prime Minister of Greece Kostas Koufogiorgos (born 1972), Greek-German cartoonist
Surname Bob Costas (born 1952), American sportscaster and talk show host John P. Costas (engineer) (1923–2008), American engineer John P. Costas (business) (born 1957), American businessman, banker and trader Jon Costas (born 1957), American politician Ledicia Costas (born 1979), Galician writer William P. Costas (1927–2013), American businessman and politician
See also Costa (disambiguation) Costa's hummingbird Costal (disambiguation) Kostas (film) Kostis (disambiguation)