Monrupino (Slovene: Repentabor) is a comune (municipality) in the Regional decentralization entity of Trieste in the Italian region of Friuli-Venezia Giulia, located about 9 kilometres (5.6 mi) north of Trieste, on the border with Slovenia.

As of 31 December 2004[update], it had a population of 848 and an area of 12.7 square kilometres (4.9 sq mi).

In the 1950s and 1960s, it was part of the so-called "red belt" around Trieste: that is, of those municipalities around the city dominated by the Communist Party.

[5] In June 1949, in the first municipal elections in the Free Territory of Trieste, the Communist-led Slavic-Italian Anti-Fascist Union won 97% of the votes.

The election result was heralded by the Soviet press as a victory for the Communist Party.