Manuel de Oliveira Gomes da Costa, commonly known as Manuel Gomes da Costa or just Gomes da Costa, was a Portuguese army officer and politician, the tenth president of Portugal and the second of the National Dictatorship.

The Portuguese Expeditionary Corps was the main military force from Portugal that fought in the Western Front, during World War I. Portuguese neutrality ended in 1916 after the Portuguese seizure of German merchant ships resulted in the German Empire declaring war on Portugal. The expeditionary force was raised soon after and included around 55,000 soldiers.