Cei is a surname, and may refer to: Giuseppe Cei (1889–1911), Italian aviation pioneer Giuseppe Cei (bishop) (1640–1704), Roman Catholic prelate Idilio Cei (1937–1996), Italian football goalkeeper Luca Cei (born 1975), Italian racing cyclist Pina Cei (1904–2000), Italian stage, film and television actress Sir Kay, in Arthurian legend See also Central European Initiative CEI (disambiguation)