Paul Chartrand began to play baseball and amateur senior hockey after high school. In 1974 after a decade of teaching he moved to Queensland, Australia. After playing ice hockey at the ToomBul hockey rink near the Brisbane Schools, he co-founded a new local team, the Moreton Bay Sharks.

Being an ice hockey referee in Canada, he turned to officiating. In 1978, he was Referee for the Goodall Cup national men's competition. In 1981 he was appointed national Referee-In-Chief in the NIHL although the league ended in its second season.

When he first arrived in Brisbane in September of 1974 he was coming off a 6-2 pitching record for the neighboring provincial Calgary Giants. The right-hander played for championship teams including provincial teams in national competitions, including the first Canada Summer Games in 1969.

In his first season in 1974-75 playing for the local Athletics team in the Brisbane Major Baseball League, he had a 15-3 record with a 1.51 ERA. He later pitched for the Queensland State Team and the Australian National Team during the 1974-82 seasons. He led Queensland with two wins in a Tri-State series in 1974 at Sydney. He also pitched a record 20-strikeout no-hitter on October 21, 1979 against the Ipswich Musketeers.

Named to two Australian national teams in ice hockey and baseball, Chartrand returned to Canada to teach and practice law in 1982. He continued to compete in both sports, winning a national bronze medal with the Saskatoon Liners in 1983 and later retiring at 49 years of age.

In ice hockey, he played four seasons with the Sagkeeng Old-Timers team, competing successfully in national and in Old-Timers World Cup competitions in Nice, Munich, Paris and elsewhere.

Following his return to Canada in 1982, he pursued an academic career focused on the law and policy of states respecting indigenous people. He completed a Master of Laws degree at the University of Saskatchewan and took on university appointments in Australia, Canada, New Zealand and the United States.

Author of over fifty publications, he served on several high-profile public bodies, including Canada's Royal Commission on Aboriginal Peoples, Manitoba's Aboriginal Justice Implementation Commission, and the Aboriginal Healing Foundation.