National Scrabble Association
The governing body for tournament and club play in the United States and Canada.
scrabble-assoc.com

The Scrabble FAQ - Upcoming North American Scrabble Tournaments
Listing few Scrabble Tournaments in some US and Canadian cities.
home.teleport.com

The Scrabble FAQ - North American and World Scrabble Championships
Listing major North American and World (English language) Scrabble Championships.
home.teleport.com

The Scrabble FAQ, Non North American English-Language Scrabble
Listing of major Scrabble Tournaments in some non North American countries.
home.teleport.com

International Spanish-Scrabble Federation (FISE)
Official website of the International Federation of Spanish speaking countries Associations. Organizes Championships in the Spanish World.
fisescrabble.org