Camilleri is top seed for both the Black Knight Open and the City of Perth International the following weekend.
Camilleri won the inaugural Black Knight Open in 2010 on her way to seven straight titles on the Australian Squash Tour.
The world number 28 has already won two tournaments in 2011, the ACT Open in March and the Westerfolds JDP in April.
Second seed is world number 49 Melody Francis from Melbourne, whom Camilleri beat in the 2010 final, but who is a much improved player this year after becoming a scholarship holder with the Australian Institute of Sport.
Both Camilleri and Francis, who won her maiden title in Brisbane in January, have first round byes.
Players from six different countries will be playing in the Black Knight Open, which is being held at the Terrace Squash Centre in East Perth.
Third seed is Melbourne’s Sarah Cardwell, while Tasmanian Maggy Marshall is the fourth ranked player.
Adding to the international flavour are seventh seeded New Zealander Amanda Landers-Murphy, and rising Welsh star Tesni Evans, the eighth seed.
There are also representatives from India, South Korea and Iran along with players from every Australian state and territory.