Vasileios is a Greek word meaning "royal", or "kingly". It may refer to:
Places Agios Vasileios, Achaea, village in the municipal unit of Rio, in Achaea, Greece Agios Vasileios, Corinthia, village in the municipal unit of Tenea, in Corinthia, Greece
People Vasileios Christopoulos (born 1951), Greek writer Vasileios Demetis (born 1983), Greek swimmer Vasileios of Dryinoupolis (1858–1936), religious figure in the Greek Orthodox church in Northern Epirus Vasileios Polymeros (born 1976), Greek rower Vasileios Pliatsikas (born 1988), Greek footballer Vasileios Spanoulis (born 1982), Greek professional basketball player Vasileios Theodoridis, Greek journalist