Paul Pageau was born October 1, 1959 in Montreal, Quebec. A graduate of the Quebec Major Junior Hockey League, Pageau spent four seasons in the "Q" with stops in Quebec with the Remparts and Shawinigan with the Cataractes.
A QMJHL First Team All-Star in goal for Shawinigan in 1980, Pageau went on to represent Canada on the international stage at the 1980 Winter Olympics in Lake Placid while also playing in ten games with Canada's National team.
Following the 1979-80 season, the Los Angeles Kings signed Pageau as a free agent. In his first season of professional hockey, Pageau saw action in the Central Hockey League with Houston and Oklahoma City while playing in one game with the International Hockey League's Saginaw Gears. Even though he spent some time with three separate teams in 1980-81, Pageau made his NHL debut with the Kings during the season.
In 1981-82 Pageau returned to the IHL and to the Gears where he played just over one season with the team before joining the American Hockey League's New Haven Nighthawks. Pageau played only 37 games with New Haven before becoming a member of the AHL's Sherbrooke Jets in 1983-84.
Pageau returned to Sherbrooke in 1984-85 while also seeing action with the IHL's Flint Generals before calling it a career following the season.