A balneario (Portuguese spelling: balneário) is an Iberian and Latin American resort town, typically a seaside resort, and less commonly along the shores of lakes and rivers or next to hot springs. In Spain, balneario typically only refers to spa town resorts. These resorts offer recreation, sports, entertainment, food, hospitality and safety services, retail, and cultural events. These balneario towns are characterized by being flooded by masses of tourists during the summer seasons.

The word "balneario" comes from Latin "balnearĭus" and initially from Greek "balneae" from Greek βαλανεῖον balaneion, - "bath, bathing room".

Balnearios may be as simple as a beach or as complex as a planned city. Mexico's Acapulco and Puerto Vallarta are balneario city-destinations, for example, while Chile's San Alfonso del Mar is a more planned resort community and its Viña del Mar a city that also happens to be a balneario. Balnearios are characterized by having beaches and hot climates, being seasonal destinations, attracting foreign tourists, and having boom periods surrounding festivals. The word comes from Spanish, and the difference between a "playa" (beach) and a balneario is the services provided at the balneario.

A beach is simply a stretch of shoreline, usually sandy, while a balneario has amenities.^[1][2] It is a specific recreational destination with features such as bathrooms, lifeguards, changing rooms, and picnic tables.^[3]

• Balneario da Toxa, Galicia, Spain

• Chilean balnearios