Oscar John de Satgé (1836–1906) was an Australian squatter and politician.

On 4 March 1869, Oscar de Satge was elected to the Queensland Legislative Assembly at the resulting by-election, defeating Charles Hardie Buzacott, the proprietor of the local newspaper, the Peak Downs Telegram.

[6] On 30 December 1880, Boyd Dunlop Morehead, the member for Mitchell, was appointed to the Queensland Legislative Council.

Oscar de Satge won the resulting by-election on 3 February 1881.

On 3 August 1882, he married Beatrice Elizabeth Fletcher at Madehurst, Sussex, with whom he had one son and two daughters.