Sant Jordi, Blue Flag beach in La Ametlla de Mar, Spain.

Sant Jordi is a semi-natural beach in La Ametlla de Mar, at the mouth of the Sant Jordi ravine where the Sant Jordi lagoon forms. It measures 102 metres long and 82 metres wide on average, made of fine sand and pebbles, facing east-northeast. The Castle of Sant Jordi d'Alfama stands on its south side.

The beach lies at the mouth of the Sant Jordi ravine, where the Sant Jordi pond forms before the sand, within the protected Plana de Sant Jordi natural area. It has been awarded the Blue Flag for the quality of its services, and the Catalan Water Agency carries out weekly water-quality checks during the bathing season, with results rated excellent.

The beach lies at the mouth of the barranc de Sant Jordi, where the estany de Sant Jordi forms just before the sand. The Castell de Sant Jordi d'Alfama stands on its southern side, and the whole setting belongs to the protected Plana de Sant Jordi area. The name links the cove to that castle and to the stream that feeds the wetland behind it.

The beach is reached by car or on foot, with parking, showers, toilets, a beach bar and a lifeguard and first-aid post on site. It lies at the mouth of the Sant Jordi ravine, where the Sant Jordi lagoon forms just before the sand.

The seabed here is valued for its ecology and suits diving and snorkelling. The beach lies at the mouth of the Sant Jordi ravine, where the Sant Jordi pond forms just before the sand, inside the protected Plana de Sant Jordi area.