The Anta de Carcavelos, located close to the village of Carcavelos near the town of Lousa in the municipality of Loures in the Lisbon District of Portugal, is a stone age dolmen (burial chamber) or megalithic monument from the Chalcolithic period.

[1][2] The Anta was a communal grave consisting of a sepulchral chamber with a polygonal shape.

[2][3] Based on earlier identification by Mesquita Figueiredo and Carlos Ribeiro (1813-82), the German archaeologists Georg and Vera Leisner visited the Anta of Carcavelos in 1944 as part of preparing a systematic inventory of the Neolithic tombs of the Lisbon area.

Hastened as a result of looting at the site, the first excavations were carried out in 1986 and continued again from 1991-94, under the supervision of Gustavo Marques of the Loures municipality.

[3] From the studies carried out in 1994, many bones were collected, with over 80 adult males and females believed to have been buried there.