The Great Dolmen of Comenda da Igreja (Portuguese: Anta Grande de Comenda da Igreja, or alternately Anta Grande da Herdade da Igreja) is a megalithic funerary site in the civil parish of Nossa Senhora do Bispo, in the municipality of Montemor-o-Novo, in the central Alentejo region of continental Portugal.

Between the 4th millennium BC and the middle of the 3rd millennium BC, the site of was occupied by semi-nomadic or sedentary settlement, associated with the communities of ancient Évora.

[1] Its form extends longitudinally from west to east, composed of a central polygonal chamber roughly 4 metres (13 ft) wide, with an oblong rectangular corridor 10 metres (33 ft) long.

[1][2] The articulated volumes are oriented horizontally, and covered independently in each section, with the main chamber covered by a granite slab, and the corridor by individual elements.

[1] Of great dimensions, the corridor is still intact and in a state of conservation.