The 100,000 capacity Algarve International Circuit (Portuguese: Autódromo Internacional do Algarve), commonly referred to as Portimão Circuit, is a 4.692 km (2.915 mi) race circuit located in Portimão, Portugal. With a total cost of €195 million (approximately $250 million), the project includes a karting track, technology park, five-star hotel, sports complex and apartments.

Construction was finished in October 2008 and the circuit was homologated by both the FIM on 11 October 2008 and the FIA two days later.

The circuit was designed by Ricardo Pina, Arquitectos. In October 2010 the teams agreed to add the Portimão Circuit to the Formula One testing roster along with Bahrain.