Lieutenant-Colonel Sir William Alexander Gordon Gordon-Cumming, 4th Baronet (20 July 1848 – 20 May 1930) was a Scottish landowner, soldier, adventurer and socialite. A notorious womaniser, he is best known for being the central figure in the royal baccarat scandal of 1891. After inheriting a baronetcy he joined the Army and saw service in South Africa, Egypt and the Sudan; he served with distinction and rose to the rank of lieutenant-colonel. Something of an adventurer, he also spent time hunting in the US and India.
A friend of Edward, Prince of Wales for over 20 years, in 1891 he attended a house party at Tranby Croft, Yorkshire, where he took part in a game of baccarat at the behest of the prince. During the course of two nights' play he was accused of cheating, which he denied vehemently. After news of the affair leaked out, he sued five members of the host family for slander; the Prince of Wales was called as a witness. The case was a public spectacle, widely reported in the UK and abroad, but the judgement went against Gordon-Cumming and he was ostracised from polite society.
A handsome, arrogant man, Gordon-Cumming was a womaniser, particularly with married women. After the court case he married an American heiress; the couple had five children, but it was an unhappy relationship. He was the grandfather of the writers Katie Fforde and Jane Gordon-Cumming.
William Gordon Gordon-Cumming was born on 20 July 1848 at Sanquhar House, near Forres, Morayshire. His parents were Alexander Penrose Gordon-Cumming and his wife Anne Pitcairn née Campbell (died 1888). The big-game hunter Roualeyn George Gordon-Cumming was his uncle; and the travel writer Constance Gordon-Cumming was his aunt. He was educated at Eton and Wellington colleges.