Nikolaos

In sports:

• Nikolaos Andreadakis, Greek athlete
• Nikolaos Andriakopoulos, Greek gymnast
• Nikolaos Balanos, Greek architect
• Nikolaos Dorakis, Greek shooter
• Nikolaos Georgantas (1880-1958), Greek athlete
• Nikolaos Georgeas, former Greek football player who last played for AEK Athens FC
• Nikolaos Giantsopoulos (born 1994), Canadian soccer player
• Nikolaos Kaklamanakis, Greek gold-medal winner who lit the Olympic torch in the opening ceremony of the 2004 Summer Olympics
• Nikolaos Levidis, Greek shooter
• Nikolaos Lyberopoulos (b. 1975), Greek football player
• Nikolaos Michopoulos, Greek professional football player
• Nikolaos Efthimiou (1990-1993), Greek football athlete for AEK then the Dallas Sidekicks for 1993-1999
• Nikolaos Morakis, Greek shooter
• Nikolaos Siranidis, Greek diver who competed in the synchronised 3-metre springboard competition at the 2004 Summer Olympics
• Nicolaos Trikupis, Greek Shooter, Politician, and Army General
• Nikolaos Tsiantakis (b. 1963), retired Greek football midfielder

In other fields:

• Prince Nikolaos of Greece and Denmark (b. 1969)
• Nikolaos Chalikiopoulos Mantzaros (1795-1872), Greek composer
• Nikolaos Damaskenos, Syrian historian and philosopher in the Augustan age of the Roman Empire
• Nikolaos Douvas, (b. 1947), former Chief of Staff of the Hellenic Army
• Nikolaos Kavadias (1910–1975), Greek poet and writer
• Nikolaos Makarezos (1919-2009), Greek army general
• Nikolaos Mantzaros (1795-1872), Greek composer
• Nikolaos Mavrogenis (d. 1790), Phanariote Prince of Wallachia
• Nikolaos Oikonomides (1934-2000), notable Greek Byzantinist
• Nikolaos Plastiras (1883-1953), General of the Greek army
• Nikolaos Sifounakis, (b. 1949), Greek politician
• Nikolaos Skoufas (1779-1818), member of Filiki Eteria
• Nikolaos Trikoupis, Major General with the Greek Army during the Greco-Turkish War of 1919-1922
• Nikolaos Xydias Typaldos (1826-1909), Greek painter
• Nikolaos Zachariadis (1903-1973), General Secretary of the Communist Party of Greece

In fiction:

• Nikolaos is the Master Vampire of the City of St. Louis in Laurell K. Hamilton's novel Guilty Pleasures.

• Nikos, the diminutive form of the name
• Nikol
• Nikolaus (given name)
• Nicholas for use of the name in English
• Agios Nikolaos, various places in Greece and Cyprus
• Niccolò