Trofa (Portuguese pronunciation: [ˈtɾɔfɐ] ) is a municipality in the north of the Porto metropolitan area in Portugal, 18 km from central Porto. The population in 2011 was 38,999, in an area of 72.02 km.

Trofa has an industrial park, with various types of businesses including pharmaceutical, metalworking and textile industries.

The city centre is formed by the parish Bougado (São Martinho e Santiago). Another important locality in the municipality is Coronado.

Initially the municipality had eight parishes, but following the administrative changes in 2013, it was divided into five civil parishes (freguesias):

• Alvarelhos e Guidões
• Bougado (São Martinho e Santiago)
• Coronado (São Romão e São Mamede)
• Covelas
• Muro

Trofa has had an important role due to its geographic location between Porto and Braga, being located in the border of Douro and Minho, but still inside of the district of Porto, which led to Trofa being mentioned in the time of the Roman Empire ("trofa" means frontier in Arab). An important factor of its growth was the construction of railways in the beginning of the 20th century.

• Tiago Pereira (born 1975), known as Tiago, a former footballer with 631 club caps

• Forum Trofa
• Municipio da Trofa / City Site