James Dunn (born November 12, 2000) is a Canadian sledge hockey player.
Dunn was born on November 12, 2000, in Wallacetown, Ontario, Canada to parents Jeremy and Coralee Dunn. On December 2, 2011, at the age of 11, he had had a biopsy taken on his right femur bone and was diagnosed with osteosarcoma. He immediately underwent chemotherapy treatments and had his leg amputated in a surgical procedure that lasted almost 16 hours. While recovering in the hospital, Dunn was encouraged by Tyler McGregor to try out sledge hockey.
On February 11, 2018, at the age of 17, Dunn became the youngest member named to Canada's national para ice hockey team to compete at the 2018 Winter Paralympics. With his assistance, Team Canada won a silver medal in an overtime loss to the United States.
He again represented Canada at the 2022 Winter Paralympics and won a silver medal in Para ice hockey. He competed at the 2026 Winter Paralympics and won a silver medal, Canada's third consecutive silver medal in Para ice hockey at the Winter Paralympics.