Almassora (Valencian: [aɫmaˈsoɾa]; Spanish: Almazora) is a town and municipality in the comarca of Plana Alta, Valencian Community, Spain.
There are ancient Iberian remains within the municipal term. Its present location is from Muslim origin and it is said that the place received its name from Al-Mansur Ibn Abi Aamir 'Almansor', the Caliph of Cordova.
James I of Aragon conquered the town from the saracens in 1234. the municipal charter was given in 1237. In 1616 a channel was built to bring the water from the Millars River to the town.