Pelletier was born in Rivière-du-Loup , Quebec . She studied kinesiology at Laval University . She used to play for the Club de Rugby de Québec located in Quebec city and for the Laval Rouge et Or where she won numerous accolades.[ 2]
Pelletier won the U SPORTS Women's Rugby Championship with the Laval Rouge et Or rugby side in 2019 and reached the semi-final in 2022.[ 3] [ 4] She won the Élite 1 championship in 2023 with Stade bordelais .[ 5]
Justine Pelletier, Rouge & Or of Laval University She competed for Canada at the delayed 2021 Rugby World Cup in New Zealand .[ 6] [ 7] She was in the starting line-up in all three matches of the knockout stage against the United States , England , and France .[ 8] [ 9] [ 10] [ 11] They reached the third place final before losing to France.[ 11]
In 2023, She was named in Canada's traveling squad for their test against the Springbok women , and the Pacific Four Series .[ 12] [ 13] She started in Canada's 66–7 overwhelming of South Africa in Madrid , Spain .[ 14] [ 15]
In July 2023, she started in her sides Pacific Four loss to the Black Ferns , they went down 21–52.[ 16] [ 17]
She was selected in Canada's squad for the 2025 Pacific Four Series .[ 18] [ 19] In July 2025, she was named in Canada's Rugby World Cup squad.[ 20] [ 21]