Beiriz is a suburban area in Póvoa de Varzim, Portugal. It is an ancient ecclesiastical parish and former civil parish. In the census of 2001, it had a population of 3,229 inhabitants and a total area of 4.31 km². A 2012 law merged the parish with neighbouring Póvoa de Varzim (parish) and Argivai, becoming the southern parish of the city of Póvoa de Varzim, known as União das Freguesias da Póvoa de Varzim, Beiriz e Argivai.
Beiriz is known for its Tapetes de Beiriz (Beiriz carpets).