| Tech | |
| Pushpin Map: | France#France Occitanie |
| Mouth Coordinates: | 42.59°N 3.0453°W |
| Subdivision Type1: | Country |
| Length: | 84.5km (52.5miles) |
| Source1 Elevation: | ±2500m (8,200feet) |
| Discharge1 Avg: | 9.6m3/s |
| Basin Size: | 750km2 |
The Tech (in French tɛk/; Catalan; Valencian: Tec in Catalan; Valencian pronounced as /ˈtɛk/) is a river in southern France, very close to the French-Spanish border. It runs through a valley in the Pyrénées-Orientales, in the former Roussillon, and is 84.5km (52.5miles) long. Its source is the Parcigoule Valley, elevation 2500m (8,200feet), and it feeds the Mediterranean Sea. At Céret, the medieval Devil's bridge, once the largest bridge arch in the world, spans the river in an arc of 45m (148feet) in length.
The Tech flows through 25 different towns, from its source to the sea: Prats-de-Mollo-la-Preste, Serralongue, Le Tech, Saint-Laurent-de-Cerdans, Montferrer, Corsavy, Arles-sur-Tech, Montbolo, Amélie-les-Bains-Palalda, Reynès, Céret, Saint-Jean-Pla-de-Corts, Maureillas-las-Illas, Le Boulou, Tresserre, Saint-Génis-des-Fontaines, Montesquieu-des-Albères, Banyuls-dels-Aspres, Villelongue-dels-Monts, Brouilla, Ortaffa, Palau-del-Vidre, Elne and Argelès-sur-Mer. It flows into the Mediterranean Sea between Saint-Cyprien and Argelès-sur-Mer, southeast of Perpignan.