Masters Swimming Australia Inc. (MSA) is the peak body for adult swimmers aged 18 and above. It is a non government, not for profit organisation, constituted in 1975. Masters Swimming Australia Inc. used to be referred to as “AUSSI”, which is an acronym for “Australian Union of Senior Swimmers International”. This acronym was dropped from the name in October 2009. The organisation does not receive funding from any government source, however some Branches are eligible for and receive funding from State Governments.