Poste San Marino (Italian pronunciation: [ˈpɔste sam maˈriːno], lit.

'San Marino Post') or Poste Sammarinesi (pronounced [ˈpɔste sammariˈneːzi], lit.

'Sammarinese Post') is the company responsible for postal service in San Marino.

It was established on 7 October 1607, with the first stamps printed in 1877.

San Marino joined the Universal Postal Union on 7 January 1915.