The International Amateur Radio Union (IARU) is a federation of national associations of certified radio amateurs, representing over 150 countries and separate territories around the world.

The three IARU Regions are organised to broadly mirror the structure of the International Telecommunications Union (ITU) and its related regional telecommunications organisations. The Regions comprise:
- IARU Region 1: Europe, Africa, the Middle East and Northern Asia
- IARU Region 2: The Americas
- IARU Region 3: Asia-Pacific

The IARU represents the interests of the Amateur Radio Service worldwide to relevant international organisations, promoting the interests of amateur radio and seeking to protect and enhance its spectrum privileges.

2009 IARU HF World Championship Contest (July 11-12, 2009)

The 2009 IARU HF World Championship Contest Rules are now posted. All licensed amateurs worldwide are invited to participate. The Objective of this contest is to contact as many other amateurs, especially IARU member society HQ stations, around the world as possible using the 160, 80, 40, 20, 15 and 10 meter bands.

This contest takes place the second full weekend of July, beginning 1200 UTC Saturday and ending 1200 UTC Sunday (July 11-12, 2009). Both Single and Multi operator stations may operate the entire 24-hour period. Multipliers are The total number of ITU zones plus IARU member society HQ stations worked on each band (not mode). IARU officials represent a maximum of four multipliers per band (AC, R1, R2 and R3).

More information can be found on the ARRL Contest page.