The necropolis of Montessu is an archaeological site located in the municipality of Villaperuccio, Sardinia.

The necropolis is located on the southern flanks of the hill of Sa Pranedda, a few kilometers north of Villaperuccio. Set within a large natural amphitheater, it has about forty domus de janas and is considered one of the largest and most important archaeological site of Sardinia.

Dating back to pre-Nuragic period (third millennium BC), this burial site was used for about a millennium during which alternated the cultures of Ozieri, Abealzu-Filigosa, Monte Claro, Bell Beaker and Bonnanaro.

Some domus de janas feature engraved patterns in relief such as spirals, concentric symbols and bull horns.

• Enrico Atzeni, "Montessu (Santadi)", in Rivista di Scienze preistoriche, XXVII, 1972, p. 477 ss.;
• M. Frau-R. Monticolo, Sulcis: guida archeologica: Calasetta, Carbonia, Carloforte, Giba, Masainas, Narcao, Nuxis, Perdaxius, Piscinas, Portoscuso, S. Giovanni Suergiu, S. Anna Arresi, Santadi, S. Antioco, Teulada, Tratalias, Villaperuccio, Firenze, Arte e Natura,1990, pp. 34–36.

39°08′00″N 8°40′07″E / 39.1333°N 8.6686°E / 39.1333; 8.6686