Mervyn Brian Muggleton (born 4 September 1941), known as Brian Muggleton to differentiate him from his father, is a former Australian cricketer and baseball player. The son of Merv Muggleton, who had played baseball for Sturt and South Australia, Muggleton was born in Adelaide, South Australia, but moved with his family to Perth, Western Australia, in 1949, after his father was transferred. He made his state cricket debut for Western Australia during the 1964–65 season, scoring 21 and 12 runs in a Sheffield Shield match against New South Wales as a middle-order batsman. Muggleton's next matches at first-class level did not come until the 1969–70 season. He scored only 17 runs from four innings, and was not selected for Western Australia again.