The Terceira Divisão Portuguesa (in English: Portuguese Third Division) was a football league in Portugal, situated at the fourth level of the Portuguese football league system. The Third Division was initially the third level of the Portuguese pyramid but with the creation of the Segunda Liga in 1990–91, it became the fourth level. The competition merged with the Portuguese Second Division at the end of the 2012–13 to form a new enlarged third level league, the Campeonato Nacional de Seniores.