About.com: Golf Rules Online
Browse through the Official Rules of Golf on About.com, or click to a specific rule to decipher a rules quandary.
Royal Canadian Golf Association
The RCGA governs Canadian golf, including Rules of Golf.
Alberta Golf Association
The AGA website has a Quiz to test your knowledge on the Rules of Golf.
USGA Golf Rules
The USGA, in conjunction with the R&A in St. Andrews, Scotland, writes, interprets and maintains the Rules of Golf to guard the tradition and integrity of the game. The two organizations are joint authors and owners of The Rules of Golf and Decisions on the Rules of Golf. Through an agreement with the R&A, the Rules jurisdiction of the USGA includes only the United States, its possessions and Mexico.