Viscount of São Jorge (Portuguese: Visconde de São Jorge) is a title was created by Carlos I of Portugal, by decree dated 7 November 1893, in the name of Adriano Auguto d´Oliveira, Knight of the Royal Household, Knight Commander of the Royal Military Order of Our Lady of Conception of Vila Viçosa.
Adriano Auguto d´Oliveira married Eleanor Justine du Puy de Montbrun, daughter of the Marquess Lucien de Montbrun and the Marchioness Louise Amelie Marie Soulages de Saint-Marc.
He lived in Paris and died in the same city without surviving descendants.
The title is associated with the noble house and estate of São Jorge situated in the Trás-os-Montes municipality of Azinhoso.
It belonged in the 18th century (around 1740) to Tómas de Sá Pimentel Moraes Pinto d´Oliveira and his wife, D. Luiza Francisca de Moraes e Távora (from the Counts of São João da Pesqueira and later Marquesses of Távora), daughter of António Osório Pinto d´Oliveira de Moraes, Knight of the Royal Household.