Vinaixa (Catalan pronunciation: [biˈnajʃa]) is a municipality in the region of Les Garrigues, in the province of Lleida, Catalonia, Spain.

Vinaixa is a municipality located in the south-eastern sector of the region of Les Garrigues, in a high area, on the border with the Conca de Barberà, and in the line of historical communications of the coast with the interior.

The Castle of Vinaixa (Cal Tarragó) is located at the highest point of the village (482 metres).

With the advance of the Christians, the nucleus was resettled by Ramon Berenguer IV, who granted settlement charters in the 12th century to the people of Tàrrega.

Berenguer de Puigverd granted several instruments in favour of the Poblet Abbey which in the 13th century acquired total jurisdiction.