The 2017–18 Taça da Liga was the eleventh edition of the Taça da Liga (also known as Taça CTT for sponsorship reasons), a football cup competition organised by the Liga Portuguesa de Futebol Profissional (LPFP) and contested exclusively by clubs competing in the top two professional tiers of Portuguese football. It began on 23 July 2017 and concluded on 27 January 2018 with the final at Estádio Municipal de Braga in Braga.