National Mah Jongg League
Governing BodyThe primary governing body for American mahjong, publishing the official annual card with standardized hands and rules.
United StatesAmericanFounded 1937New York, NY
Official Website
Visit the official NMJL website
Overview
Founded in 1937 in New York City by a group of mahjong enthusiasts seeking to standardize the game, the National Mah Jongg League has grown from 32 original members to over 350,000 today. The League publishes an annual Standard Hands and Rules Card that defines the official winning combinations for American mahjong. This yearly update keeps the game fresh and ensures all players are using the same rules. A portion of card sales proceeds supports charitable organizations including the Alzheimer's Association and the American Heart Association.
Key Facts
- Founded in 1937 in New York City
- Over 350,000 members worldwide
- Publishes the official annual card (new each April)
- Run by the Unger family since the 1960s
- 2025 marks 89 years of operation
- Donates portion of card sales to charity
What They Do
- Publishing annual Standard Hands and Rules Card
- Arbitrating rule disputes for members
- Answering member questions about gameplay
- Supporting mahjong-related charities
- Maintaining the official rules of American mahjong
Membership
Membership is included with purchase of the annual card ($15). Members receive the official card, rule clarifications, and access to member services.
Leadership
Currently run by brothers David and Larry Unger, who took over from their mother Ruth Unger after her passing in 2015.