The photo was shared on Instagram by Gretzky's daughter Paulina, Johnson's fiancee.
The Great One appears to be wearing the same coveralls as Johnson's actual caddie did, complete with the Masters logo and No. 62 on the front.
Johnson's caddie during the record-setting tournament was his brother, Austin. They became the third family pair to win the Masters and first set of brothers to do so.
It wasn't the only hockey-related caddie wear at this year's Masters.
During play on Saturday, Tiger Woods' caddie, Joe LaCava, was shown wearing a New York Rangers t-shirt under his caddie coveralls.