Peniche is a seaside municipality and a city in Portugal. It is located in the Oeste region, formerly Estremadura Province. The city itself has a population of about 15,600 inhabitants. The present mayor is Henrique Bertino, elected by the independent coalition GCEPP (Grupo de Cidadãos Eleitores por Peniche; Electors for Peniche Group of Citizens).

The city was built on a rocky peninsula which is considered by geologists a unique example of the Toarcian turnover during the worldwide Early Jurassic extinction.

Peniche is known for its long beaches, which are popular for recreational activities and sports such as surfing, windsurfing, bodyboarding and kite surfing. These beaches are consistently windy and have good surf breaks with Supertubos, i.e., waves forming fast and powerful tubes, considered among the best in Europe. The area has been called the "European Pipeline", after the Banzai Pipeline in Hawaii.

Peniche Fortress is a notable example of Portuguese coastal defences. During the authoritarian rule during the 20th Century, known as the Estado Novo, or Second Republic, it was used as a prison for communist and other opponents of the regime.

The Berlengas islands, about 10 kilometres (6 mi) offshore from the peninsula, are part of the municipality. They form one of the world's first nature reserves. In summer, the islands can be visited by taking a ferryboat from Peniche.

Peniche, with its scenic harbour, white windmills, chapels and long sandy beaches has inspired famous artists like Maurice Boitel.