Estádio do Mar is a light rail station on the Porto Metro system in the municipality of Matosinhos, Portugal. The station is on line A of the Metro, which provides a direct connection to the centre of the city of Porto. It takes its name from the nearby stadium and was opened in 2002.

In 1884, the contractors building the breakwaters at the Port of Leixões, built a narrow gauge railway from the quarries at São Gens to the port area. After the completion of the port works in 1893, this line was adapted for the transport of passengers and goods, with connections to the to the existing Porto to Póvoa and Famalicão narrow gauge line, allowing direct services to be operated between Porto-Boavista station [pt] and the port. This line became known as the Matosinhos branch.

The old narrow gauge lines closed in 2001, as part of the preparations for the creation of the Porto Metro, which elsewhere uses much of the track-bed of these lines. Only a short stretch of the Matosinhos branch was reused in this way, but this stretch does include Estádio do Mar station. To the east of the station, where the metro curves to the left, the old line continued straight on. To the west, the metro follows the old line as far as Pedro Hispano. The new station was on the first section of the Porto Metro to open and was inaugurated on 7 December 2002, with commercial services starting on 1 January 2003.

Estádio do Mar is a through station on line A. The next station to the west is Pedro Hispano, with trains passing through an underpass under the A28 motorway between the two. To the east, the next station is Vasco da Gama. The platforms are at street level, with two through tracks served by two side platforms accessible directly from the street. There are four or five trains per hour in each direction.