Michael Horatio Westmacott (12 April 1925, Babbacombe, Torquay, Devon – 20 June 2012, Grange-over-sands, Cumbria) was a prominent British mountaineer.
While Edmund Hillary and Tenzing Norgay were making the first ascent of the 8850m Everest mountain in 1953, it was Westmacott and his team of Sherpas who kept open the expedition's vital line of supply and return.
He was a junior officer in King George V's Bengal Sappers and Miners, building bridges in Burma with 150 Japanese PoWs under his command.
He climbed extensively in the United Kingdom and the European Alps prior to Everest, and later opened new routes in Peru, the Hindu Kush and Alaska.
Family Michael was the oldest of three children of Horatio Westmacott, who served in the Royal Navy, and Irene Mary Juanita Gwennap Moore.