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.