Orr was born on March 20, 1948 in the town of Parry Sound on the shores of Georgian Bay in Ontario, Canada. Orr's father, Doug Orr, had once been a hockey prospect and was invited to join the Atlantic City Seagulls in 1942 but turned down the offer. Doug Orr instead joined the Royal Canadian Navy, serving during the Second World War. He returned after the war to Parry Sound and Arva Steele, whom he had married before he left for war, and to a job in the CIL dynamite factory. Doug and Arva had five children together: Patricia, Ronnie, Bobby, Penny and Doug Jr.