Avinyonet del Penedès is a municipality in the comarca of the Alt Penedès in Catalonia, Spain. It lies in the south-east of the comarca and is served by the N-340 road between Barcelona and Tarragona.
The municipal administration (ajuntament) is located in Les Cabòries. Among the municipality's notable features is the Romanesque Benedictine monastery of Sant Sebastià dels Gorgs, which has been partially restored.