This is the 2016-17 North American 3 Atlantic Hockey League season. This is the league's first season under this name and its' 51st season overall dating back to its founding at the Metropolitan Junior Hockey League in 1966.
The re-branding of the league occurred when after the league completed its 2015-16 season. The Eastern Hockey League announced on March 1, 2016 that the Elite Division was being reorganized as the 19U Elite Division. The Elite Division will focus upon development of players for higher levels of play. As part of this reorganization the league is adding seven teams from the Metropolitan Junior Hockey League (New Jersey Rockets, New York Applecore, Brewster Bulldogs, Connecticut Nighthawks, Hartford Jr. Wolfpack, Philadelphia Jr. Flyers, and Philadelphia Revolution, and the Lehigh Valley Jr. Rebels. As a result of this reorganization the membership of the MJHL was decimated.
On March 29, 2016 the league announced that its operations had been acquired by the Tier-II North American Hockey League and that the league would be renamed North American 3 Atlantic Hockey League (NA3AHL) for the 2016-17 season. This was done in a similar manner to when the Northern States Hockey League was absorbed by the NAHL and ran as the North American 3 Eastern Hockey League for a couple of seasons before being absorbed into the North American 3 Hockey League for the 2016-17 season.
Prior to the season the previous Metropolitan Junior Hockey League website listed seven members plus two uncommitted teams (New Jersey Colonials and North Jersey Avalanche) and one team pending USA Hockey approval (New Jersey Junior Titans) were listed as being a member but none of these teams come to fruition in the league.
On July 1, 2016 the league added the Exton Bulls organization who has only previously been involved in youth hockey.
To be added upon completion of the regular season.