| Abbreviation | IYYF |
| Formation | February 8, 2013 |
| Type | International non-governmental & non-profit organization |
| Region served | Worldwide |
| Official language | English |
| Location | Prague, Czech Republic |
| Website | http://iyyf.org/ |
The international yoyo federation (IYYF) is an international organisation that is responsible for developing and promoting yoyo as a sport on a global level. The Czech Republic, Japan, Brazil, and the United States were the first national members to join the IYYF.
The IYYF operates under the rules and regulations of the Czech Republic.
