Steadfast, constant
Kostas is a common Greek diminutive of Konstantinos, derived from the Latin name Constantinus. It shares the same etymological root as the English name Constant, signifying someone who is reliable and unwavering. While widely used in Greece, it remains a distinctive choice in the United States.
About 7 boys were named Kostas in 2025.
Greek pop singer and model
Professional basketball player for Olympiacos
Greek professional footballer
Greek professional basketball player
Greek-French philosopher and writer
US births per 5-year period, 1990–present (SSA data).