Trinità d'Agultu e Vignola (, ) is a town and comune (municipality) in the Province of Gallura North-East Sardinia in the autonomous island region of Sardinia in Italy, located about north of Cagliari and about west of Olbia. It has 2,579 inhabitants.

Trinità d'Agultu e Vignola borders the municipalities of Aggius, Aglientu, Badesi, Viddalba.

The main economical activity is summer tourism.

Demographics As of 2026, the population is 2,579, of which 53.8% are male, and 46.2% are female. Minors make up 9.6% of the population, and seniors make up 26.1%.

Immigration As of 2025, immigrants make up 20.6% of the total population. The 5 largest foreign countries of birth are Pakistan, Bangladesh, Russia, Tunisia, and Romania.

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