Konstantinos is the Greek form of the Latin name Constantine 1, which itself derives from Constans, a Late Latin name meaning "constant, steadfast". The name has been immensely popular in Greece and throughout the Greek diaspora, largely due to the veneration of Constantine the Great, the first Roman emperor to embrace Christianity. Etymology Konstantinos traces its roots to the Latin Constantinus, a cognomen meaning "of Constans." The ultimate source, Constans, reflects virtues of stability and faithfulness, qualities highly prized in the Christian Roman world. Through the Greek adaptation, the name retained its original meaning while acquiring a distinctly Greek phonetic form, with the masculine ending -os. Common diminutives include Costas, Kostas, Kostis, Gus 2, and Kostakis; the name also has a variant, Konstadinos, and feminine equivalents like Konstantina and Konstadina. Historical and Religious Significance The name's prestige is inextricably linked to Constantine the Great (Flavius Valerius Constantinus, c. 272–337 AD), who founded Constantinople (modern Istanbul) as the new capital of the Roman Empire and paved the way for Christianity's legalization with the Edict of Milan. In the Eastern Orthodox Church, Constantine is revered as an equal-to-the-apostles saint, and the name Konstantinos became a staple among Byzantine emperors, clergy, and later the Greek royalty. This deep-rooted religious and imperial patronage has ensured its enduring popularity in Greece, where it remains one of the most common male given names. Notable Bearers Many prominent Greek figures have borne the name, reflecting its widespread use across politics, sports, and the arts. Among them are successive Prime Ministers and presidents: Konstantinos Karamanlis (1907–1998), Konstantinos Mitsotakis (1918–2017), and others listed in historical records. In folklore, Konstantinos Kanaris (1790–1877) gained fame as a naval commander and statesman. In modern sports, the name is represented by Olympic sprinter Konstantinos Kenteris (born 1973), footballer Konstantinos "Kosta" Barbarouses (born 1990), and athlete Konstadinos Gatsioudis (born 1973). The filmmaker Costa-Gavras (born Konstantinos Gavras, 1933) has also acquired international acclaim. As the Wikipedia corpus indicates, the name thrives in diaspora and contemporary settings alike. Konstantin, its masculine equaivalent in many Slavic languages (e.g., Serbian, Bulgarian), can also be traced directly to Constantine; other cognates exist in Albanian (Kostandin), Belarusian (Kanstantsin), and Dutch (Constantijn). Surnames derived from Konstantinos include Konstantinou, Konstantinidis, and Papakonstantinou, among others, illustrating the name's historical pervasiveness across Greek kinship and society. Meaning: Constant, steadfast (through Latin Constans) Origin/Language: Greek adaptation of Latin Constantinus Type: Given name (masculine) Usage regions: Greece, Cyprus, Greek diaspora