Hartley was a runaway winner for his first Jack Adams, finishing ahead of the New York Rangers' Alain Vigneault and Nashville Predators' Peter Laviolette.
In his acceptance speech, Hartley thanked his previous teams, the Colorado Avalanche and Atlanta Thrashers. He's a different coach now than he was during those stints.
"You change because you get older, you get more mature, you learn," Hartley said Wednesday night. "We get better, we learn things, we try things and stuff that works you keep doing it, and stuff that doesn't work you just throw them into the garbage can."
Hartley credited his players and members of the front office for the award.
"Coach of the year award, I think it's a reflection on the entire organization," he said. "There's not one man that can be the difference in an organization."
Flames forward Jiri Hudler was also honoured, becoming the first Czech player to win the Lady Byng Trophy. Johnny Gaudreau finished third in voting for the Calder Trophy as rookie of the year.
Follow @SWhyno on Twitter