Catalan Workers' Left (in Catalan: Esquerra Catalana dels Treballadors) was a political party in Northern Catalonia, France.

ECT was linked to the Socialist Party of National Liberation (PSAN).

In 1977 a group, linked to the Socialist Party of National Liberation - Provisional (PSAN-p), broke away from ECT and formed the Socialist Organisation of National Liberation (OSAN).

ECT was dissolved in 1981, but many of its cadres continued to work in other political outfits, like Catalan Unity (UC).

This article about a political party in France is a stub.