Presidential elections were held in Portugal on 8 June 1958, during the authoritarian Estado Novo regime led by Prime Minister António de Oliveira Salazar.

In Craveiro Lopes' place, the National Union, the sole legal political party, levied naval minister Américo Tomás, a conservative.

The democratic opposition backed Air Force General Humberto Delgado, who ran as an independent in an attempt to challenge the regime.

"[1] Delgado knew that under Portugal's corporatist constitution, the president still had the right to dismiss the prime minister, which was effectively the only check on Salazar's power.

The regime's secret police force, PIDE, harassed and attacked Delgado voters and supporters, and there were many reports of widespread electoral fraud.