Caminha is a municipality in the north-west of Portugal, 21 km north from Viana do Castelo, located in the Viana do Castelo District.

Caminha is subdivided into 14 civil parishes. The parish Vilar de Mouros is well known for the oldest rock festival in Portugal. The seat of the municipality is the town (or vila in Portuguese) of Caminha, with 2,500 inhabitants.

The town is on the coastal part of the Portuguese Way path of the Camino de Santiago.

Caminha is located 2 km from the Atlantic Ocean, on the southern side of the Minho estuary, where this river is met by the smaller and meandering Coura. Here the Minho reaches its widest point (about 2 km) and marks the border between Portugal and Galiza. The highly scenic area, with the wide estuary marked by low-tide sandbars, a pastoral and green rural landscape, and pine forests on the slopes of the granitic mountains is increasingly popular for second homes and as a summer resort.

The large Parish Church (begun 1488) is one of the most significant buildings illustrating the transition from Gothic to Renaissance in Portugal, with Manueline influence. Several architects from Northern Spain participated in its long construction. The outstanding timber roof in the interior has rich decoration showing Moorish influences (Mudéjar style).

Other major points of interest include the main square (Renaissance fountain of 1551), several Gothic and Renaissance houses in the old core and main square, and remains of medieval and 17th-century fortifications. Some pre-Roman archeological findings and ethnographic pieces are shown in the modest Municipal Museum.

The marshes along the Coura are protected and good for birdwatching.

The Atlantic beaches in the area are wide and have good sand but tend to be windy for part of the day; the Moledo beach (4 km south) attracts surfers. River and sea excursions can be arranged with local fishermen.

South of the Coura, the small granitic range ("Serra") of Arga (823 m) provides ample opportunities for hiking, cyclocross and canyoning. In the wooded northern slopes is the small monastery of S. João de Arga (popular place for picnics, camping and exploring peaks and streams; also venue for a religious festival) and the village of Castanheira (scenic terraced fields and natural pools).

A weekly market is held every Wednesday. Work from local coppersmiths and lacemakers can be found around town.