IANA Members are classified into five voting Divisions. Click on the IANA Division below for a complete listing of Division membership and hyper-links to those members with web-pages.

• Intermodal Marketing Company Division - includes companies which act as shipping intermediaries, which arrange, purchase and sell intermodal freight shipments.
  
• Motor Carrier Division - includes companies which (1) provide truck transportation of freight which has a prior or subsequent movement by another mode of transportation, and/or (2) provide truck transportation of freight other than that which has a prior or subsequent movement by another mode of transportation.
  
• Rail Division - Includes companies which provide intermodal rail transportation and associated intermodal terminal services.
  
• Supplier Division - includes companies which provide products or services to any member of the association. Examples include: intermodal leasing companies, equipment manufactureres, software/AEI developers, storage and repair, finance/insurance, consultants, etc.
  
• Water Division - Includes companies which provide transportation of freight by water which has prior or subsequent movement by another mode of transportation, and/or provide intermodal stacktrain transportation and, at a minimum, ramp-to-ramp freight delivery, plus port authority and port terminal operators.
  

Representatives from shippers, government/military, associations, the academic community and others are classified as Non-voting Associate Members.

Members that are highlighted are linked to their home-page.