The two-time East Division all-star died early Tuesday morning from complications due to dementia, the CFL team said Wednesday in a release.
Mann, a native of Berkeley, Calif., played for the Argonauts in 1958 and from 1960-'70. He excelled as a punter and a kicker but also played receiver and defensive back.
He started his pro career in the NFL after playing college football at Oregon State University. Mann was drafted in the seventh round by the Chicago Cardinals and spent three seasons there before moving to Canada.
Mann led the CFL in receiving in 1960 and 1961 and also led the league in punting in six seasons. He had a remarkable 44.2-yard punting average and his 102-yard punt on September 18, 1966 is still the second-longest in CFL history.
"With Dave being the superior athlete that he was, I felt comfortable putting him anywhere on the field," said former Argos head coach Leo Cahill. "Very rarely does a player lead your team in punting average and receiving yards, but that was the kind of special player Dave was."
Mann competed in 153 regular-season games and 13 playoff games for the Argonauts. He was named an East Division all-star in 1960 and 1961.
"I don't think Dave Mann ever played a bad game," said former Argo Nick Volpe, who serves as the team's football operations consultant. "I watched him closely and he was one of the best all-around athletes I've ever seen.
"He maintained his love for the Argos even into retirement and was a regular on the sidelines at practice."
Mann is survived by his five children. Funeral arrangements were not immediately available.