Branca Eva de Gonta Syder Ribeiro Colaço (July 8, 1880 — March 22, 1945), better known as Branca de Gonta Colaço, was a Portuguese writer, scholar and linguist. She was the daughter of British Charlotte Ann Syder and Portuguese politician and writer Tomás Ribeiro and mother of the sculptor, Ana de Gonta Colaço.
Displaying an early talent for revealing the letters, Branca de Gonta Colaço started out as a poet, and as a collaborator in literary journals, actively contributing to a large number of newspapers and magazines. She collaborated with many newspapers, especially The Day by José Augusto Moreira de Almeida and The Thalassa [1] (1913–1915) the humorous newspapers which were run by her husband. She also contributed to Fireside [2] (1901–1911), Illustração portugueza[3] (1903–1980) and Illustration[4] (1926–1975).