International Organization of Masters, Mates, & Pilots

The International Organization of Masters, Mates & Pilots (IOMM&P), commonly abbreviated as MM&P, is a prominent United States labor union representing licensed mariners and maritime professionals. Founded in 1887, it is one of the oldest active maritime unions in the nation and operates as an affiliate of the AFL-CIO. The union's primary mission is to protect the rights, advance safety standards, and secure fair labor agreements for the highly trained professionals who navigate commercial, federal, and inland waterways.