The Autódromo do Estoril, officially known as Autódromo Fernanda Pires da Silva, is a motorsport circuit in Portugal, its length is 4.182 km (2.599 mi). It was the home of the Formula 1 Portuguese Grand Prix from 1984 to 1996. The capacity of the motorsport stadium is 45,000.

Estoril circuit was built in 1972 on a rocky plateau near the village of Alcabideche, 9 km from the city of Estoril, the beach resort lending its name to the circuit. The course has two hairpin turns, noticeable elevation changes, and a long (986 metre) start/finish straight.