Brigadier Simon Christopher Joseph Fraser, 15th Lord Lovat and 4th Baron Lovat, DSO, MC, TD (9 July 1911 in Beaufort Castle, Inverness, Scotland – 16 March 1995 in Beauly, Inverness-shire, Scotland ) was the 25th Chief of the Clan Fraser of Lovat and a prominent British Commando during the Second World War. His friends called him "Shimi" Lovat, an anglicised version of his name in the Scottish Gaelic language. His clan referred to him as MacShimidh, his Gaelic patronym, meaning Son of Simon. Simon is the favoured family name for the Chiefs of Clan Fraser. While the 15th Lord de jure, he was the 17th Lord Lovat de facto, but for the attainder of his Jacobite ancestor who was executed in 1747. He was also 4th Baron Lovat in the Peerage of the United Kingdom.