Regehr was born in Brazil, and spent his early childhood in Indonesia before his parents settled back in Canada. At 19, he was the youngest nominee for the Bill Masterton Memorial Trophy in NHL history after he made his NHL debut less than four months after suffering two broken legs in a serious automobile accident. He is best known for his strong defence and physical ability. His younger brother Richie briefly played with him on the Flames. Regehr announced his retirement from the NHL on April 11, 2015.