The Gin Rummy Association
Each year, a land-based Gin Rummy tournament known as the World Series of Gin Rummy? is held in Las Vegas. Featuring big cash prizes, it attracts over 100 gin rummy enthusiasts from around the world who compete for the title.
The website for the Gin Rummy Association (which puts on the World Series of Gin Rummy) features a tournament schedule, as well as rules, winner information, links, and mailing list sign up.