Augusto César Cardoso de Carvalho (31 March 1836 – 3 February 1905) was a Portuguese colonial administrator and a general of the Portuguese Army. He was the 54th governor of Portuguese Timor (now East Timor) from 1880 to 1881, the 102nd governor-general of the Portuguese State of India from 1886 to 1889 and the governor of Cape Verde in 1890.
He completed his preparatory course at the Polytechnic School in 1852, followed by the Naval School in 1856. He went onto a commission in Angola and embarked on a brig Vila Flor and the corvette Goa, followed by another committee on the brig D. João de Castro to Portuguese India.
In 1880 he was promoted a frigate captain and was nominated governor of Timor, during his tenure, the Timorese Kingdom of Cowa fell. Later, he became governor of Portuguese India from 1886 to 1889 where he opened the harbour of Mormugao and extended the railway line up to the then-border with British India, later he was promoted counter-admiral and became governor of Cape Verde in 1890.
In 1892, he was nominated a commander at the Naval School and in 1896 commander of the Army Marine Corps. He was lastly promoted to a vice-admiral in 1901, he died on February 3, 1905 in Lisbon.