The World Congress of Audiology (till — 2010 International Congress of Audiology) is the biennial congress of the International society of Audiology. And is held in different regions of the world to discuss important issues in relation to audiology. The XXXI World Congress of Audiology which will be held in 2012 in Moscow, will be jointly organized by the International Society of Audiology (ISA) and Russian Society of Audiology.