Msgr Sebastião Rodolfo Dalgado (Konkani devnagri script: सॆबास्तियाँव रॊदॊल्फ़ो दाल्गादॊ; Konkani 'romi script' : Sebastiaom Rodolf Dalgad; 8 May 1855 – 4 April 1922) was an Indo-Portuguese Catholic priest, academic, university professor, theologian, orientalist and linguist.
Dalgado distinguished himself as a linguist and etymologist in the study of the influences of the Portuguese language on a number of languages of Southeast Asia. He was a corresponding member of the Lisbon Academy of Sciences, elected on July 27, 1911.He also became widely renowned during his lifetime as a Konkani language scholar.
Sebastião Rodolfo Dalgado, was born in Assagao, Bardez, Goa, to a Goan Catholic family of the Bamonn caste. He had six brothers and a sister. The family's pre-conversion surname was Desai, replaced by the Portuguese surname Dalgado, after conversion to Christianity.
The second son of Ambrose Dalgado, a landowner in Bardez, and Florinda Rosa de Souza, he had six brothers and one sister. Among the siblings were Daniel Gelásio Dalgado, a medical director of the health services from Sawantwadi and an eminent botanist; Patrocínio Dalgado, ophthalmologist; and Eduardo Dalgado, a lawyer in Lisbon.
After completing his elementary studies in Assagao, the young Dalgado completed his secondary education in Mapusa and joined the Rachol Seminary, near Margao, from where he was ordained a priest in 1881.