Gettleman, who was voted recipient of the honor by fellow league executives, built the best team in Carolina history.
"It's humbling, It's a blessing. I really believe this is truly an organizational award," Gettleman told Vinnie Iyer of the Sporitng News.
The Panthers, who started 14-0, won a franchise-record 15 games and scored the most points in the NFL. As the conference’s top seed, they won the NFC Championship and advanced to Super Bowl 50.
Ten Panthers earned Pro Bowl recognition in 2015 – the most in the NFL and the most in franchise history.