Vatican City postage stamps

Vatican City postage stamps are postal adhesives issued by the Vatican post office for use on mail dispatched from the sovereign city-state. Following the foundation of Vatican City on 11 February 1929, the postal service commenced operations using equipment donated by the Italian government. The stamps are produced under the authority of the Philatelic and Numismatic Office of the Vatican City State, with practical manufacture undertaken by Italy. Vatican stamps are legally distinct from Italian issues, and neither postal authority permits the use of the other's stamps on its outgoing mail.

Before the release of sovereign issues, Italian stamps were used in the Vatican. Following a bilateral postal agreement with Italy signed on 29 July 1929 providing for mail routing through Rome, the first official issues appeared on 1 August 1929 in the fifteen-value "Conciliation" definitive series. Subsequent developments included the territory's first semi-postal release on 1 April 1933, comprising four stamps marking the 24th Holy Year, and the "Gardens and Medallions" definitive series on 31 May 1933. On 18 February 1939, following the death of Pope Pius XI, existing arms definitives were temporarily overprinted "SEDE VACANTE / MCMXXXIX" until the election of Pope Pius XII.

The visual design of Vatican stamps revolves heavily around the reigning pontificate, heraldic arms, portraits, and religious art. The low values of the 1929 definitive set, from 5 to 75 centesmi, displayed the papal heraldic arms, while the higher values up to 10 lira portrayed Pope Pius XI. The 1933 definitive series similarly retained the coat of arms on its lowest denomination but incorporated views of the Vatican gardens and St Peter's across the higher values. Many commemorative and definitive sets continue to reflect significant ecclesiastical events, papal successions, and Holy Years.