Luck replaced Peyton Manning at the Colts last season and put in an impressive rookie season as he guided the team to the playoffs before they were eliminated in the wild card round to the Baltimore Ravens.
"I still defer to Reggie Wayne as the leader of our offense," Luck told ESPN. "But I think as a quarterback there's a natural progression of leadership, the older you get.
"I definitely feel more inclined this year to share my opinion if I feel like it's necessary, or to talk in front of the guys, or what have you. As a quarterback you assume a natural leadership role."
Indianapolis open their regular season against the Cleveland Browns on September 8.