Ernest Augustus Charles Brudenell-Bruce, 3rd Marquess of Ailesbury PC, styled Lord Ernest Bruce from 1821 until 1878, was a British courtier and politician. He served as Vice-Chamberlain of the Household between 1841 and 1846 and again between 1852 and 1858. An MP for 46 years, he succeeded his elder brother in the marquessate in 1878.

The Vice-Chamberlain of the Household is a member of the Royal Household of the Sovereign of the United Kingdom. The officeholder is usually a senior government whip in the British House of Commons ranking third or fourth after the Chief Whip and the Deputy Chief Whip. The Vice-Chamberlain is the Deputy to the Lord Chamberlain of the Household and, like the Lord Chamberlain, carries a white staff of office when on duty on state occasions.