The Autostrada A31 or Autostrada della Val d'Astico ("Val d'Astico [it] motorway") is an autostrada (Italian for "motorway") 88.7 kilometres (55.1 mi) long in Italy located in the region of Veneto which connects the trunk road Strada statale 434 Transpolesana [it] (near Badia Polesine) with the town of Piovene Rocchette.

The Autostrada A31 is interconnected with the Autostrada A4 in the city of Vicenza.

There are plans for an extension north of the motorway, connecting with Autostrada A22 near Besenello.

The operator of the road was Autostrada Brescia Verona Vicenza Padova of A4 Holding.

Milano - Verona - Padova - Venezia Montecchio Maggiore - Bassano del Grappa - Montebelluna - Treviso Media related to Autostrada A31 (Italy) at Wikimedia Commons