The Irish Sports Council and the National Sports Campus Development Authority are merging and will become Sport Ireland.
The Minister for Sport Michael Ring will today launch the Sport Ireland Bill, which allows for the merger.
Currently the Irish Sports Council plans, leads and co-ordinates the sustainable development of competitive and recreational sport.
It was set up in 1999 with responsibility for nine areas, including anti doping, coaching, local sports partnerships and high performance.
While the National Sports Campus Development Authority is responsible for the National Aquatic Centre and buildings on campus housing the headquarters of the FAI, the Institute of Sport and the Irish Sport HQ.
It also has responsibility for the operation of Morton Stadium in Santry and the National Horse Sport Arena.