Uopini (Italian pronunciation /ˈwɔpini/)is a village in Tuscany, central Italy, administratively a frazione of the comune of Monteriggioni, province of Siena. At the time of the 2001 census, its population was 508. Popolazione residente - Siena (dettaglio loc. abitate) - Censimento 2001 , Istat.

Uopini is about 10 km from Siena and from Monteriggioni.

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