International Brotherhood of Magicians (I.B.M.) is an organization for professional and amateur stage magicians, with approximately 15,000 members worldwide. The headquarters is in St. Charles, Missouri, and there are over 300 local groups, called Rings, in more than 30 countries, largely concentrated in cities of the United States and Canada, though there are members of the international organization from at least 80 different countries. The organization publishes a monthly periodical entitled The Linking Ring, which features tricks, coverage of shows and events in the magic community, and interviews with magicians.

The organization was founded February 10, 1922 in Winnipeg, Manitoba by Len Vintus (stage name of Melvin Justus Given McMullen) of Transcona, Manitoba, which would later amalgamate with Winnipeg. Gene Gordon (aka Gordon Avery) of Buffalo, New York, and Don Rogers (aka Ernest Schieldge). Unlike earlier magic clubs, such as the Society of American Magicians (SAM) in the USA and The Magic Circle in England, the I.B.M. was begun by magicians living outside the major cities, who were unable to attend magic club meetings, and who kept in contact by post.

Gene Gordon established the first local group, Ring 1, in Rochester, New York. The original Ring 1 eventually disbanded, and St. Louis, Missouri later assumed the vacated title of Ring 1, which it continues to hold today. Since then, a new club, Ring 4, formed in Rochester.

Ring 96 was chartered on November 15, 1949 and has been going strong ever since.