Brian Leo "Jazz" Muller (11 June 1942 – 12 December 2019) was a New Zealand rugby union player. He played as a prop. He played for Taranaki at a provincial level from 1963 to 1972. He was a member of the New Zealand national side, the All Blacks, from 1967 to 1971. He played 35 matches for the All Blacks, including 14 internationals.^[1]

Muller was born in Eltham. He died on 12 December 2019 at the age of 77.^[2]

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