San Dorligo della Valle is a comune (municipality) in the Regional decentralization entity of Trieste in the Italian region of Friuli-Venezia Giulia, located about 4 kilometres southeast of Trieste, on the border with Slovenia. As of 31 December 2004, it had a population of 6,019 and an area of 24.5 square kilometres (9.5 sq mi).

The province of Trieste is a province in the autonomous Friuli-Venezia Giulia region of Italy. Its capital was the city of Trieste. It had an area of 212 square kilometres (82 sq mi) and it had a total population of 234,668. It had a coastal length of 48.1 kilometres (29.9 mi). Abolished in 2017, it was reestablished in 2019 as the regional decentralization entity of Trieste, and was reactivated on 1 July 2020.