Praia de Quiaios, Atlantic beach in Figueira da Foz, Portugal

Praia de Quiaios is a long sandy beach stretching several kilometers along the Atlantic coast near Figueira da Foz with pale sand and vegetated dunes behind. The shore forms a broad, open space between natural dune systems and the ocean.

Quiaios was donated in 1122 by Queen Teresa to her lover Fernão Peres de Trava; after the Battle of São Mamede, Afonso Henriques expelled him. In 1134 part of the village went to Paio Guterres and part to the Mosteiro de Santa Cruz de Coimbra. Quiaios received a foral in 1514 under Manuel I, its municipality was abolished in 1836 and it joined Figueira da Foz in 1853.

Quiaios and neighbouring Murtinheira host religious festivities: the Enterro do Bacalhau, the Cortejo de São Tomé, the Festas de S. Mamede and S. João, the morte do judas, caqueiradas and cavalhadas. The largest is the festa in honour of Senhor dos Aflitos, held on the first Sunday of October at Murtinheira, which draws thousands of people each year.

The beach lies about 3 km from the village of Quiaios, north of Figueira da Foz, with the Serra da Boa Viagem as backdrop. The sands of Quiaios and neighbouring Murtinheira are backed by a campsite, a four-star hotel, a riding centre with restaurant and a sports training complex. Outside summer the beach is barely visited.

The beach hosts the annual Woodrock festival, dedicated to stoner rock, doom metal and related rock styles; the eighth edition was planned for 16–18 July 2020 with Witchcraft, Jucifer and Zaum announced. The Murtinheira beach nearby was used as a filming location for episodes of a Portuguese telenovela.