Lieutenant-General Michael George Henry Barker (1884 - 1960), CB, DSO was a British Army general who served as commander of I Corps in 1940, before being replaced by Lieutenant-General Harold Alexander. His performance there was undistinguished; his subordinate Montgomery remarked that "only a madman would give a Corps to Barker." His active military service was finished, and he served for a year as head of Aldershot Command before retiring from the army.

Michael Barker (born 1966) is the drummer and percussionist for the Australian band The John Butler Trio.

Born in Rotorua, New Zealand in 1966, Barker began playing the drums at age 10. As a teen, he played with various bands in New Zealand and moved to Melbourne, Australia at 19 to learn orchestral percussion. He has a son (Tristan Barker) and a wife.

In Melbourne, he recorded with Neil Finn. After touring with Finn, Barker met John Butler who needed a touring drummer to support Sunrise Over Sea. Nicky Bomba, Butler’s brother-in-law, had recorded the album but had to return to his own band and could not tour with Butler's trio. Barker ended up recording percussion tracks on the album and played the drum tracks on "Betterman" and "Something's Gotta Give".

The John Butler Trio, with Shannon Birchall on bass, toured for support of Sunrise Over Sea. He played drums on the John Butler Trio's latest album, "Grand National", and also toured with the band in support of it.

Michael Barker released his first solo recording, Wonderland in November, 2006.