David Boon stands down as a national selector in order to become an international match referee
Boon, who will also relinquish his post as general manager-cricket at Cricket Tasmania, replaces compatriot Alan Hurst, retiring in July, on the International Cricket Council's elite panel of referees.
Boon's decision to call time on his career as a selector comes while a Cricket Australia-commissioned panel, set up after Australia's 3-1 Ashes series defeat by England earlier this year, continues its review of the Test set-up.
"I am excited with this appointment as it provides me with another opportunity to stay involved with this great sport," Boon, 50, said in an ICC statement issued Tuesday.
"I have thoroughly enjoyed my time as an Australian selector - it has been a great privilege to be involved at the national level.
"Naturally as an ICC match referee I will have to step down from the selection panel," added Tasmania great Boon, who scored 7,422, including 21 hundreds, in 107 Tests for Australia from 1984 to 1996.
"I wish to thank everyone at Cricket Australia and Cricket Tasmania for their understanding and support."
Former Australia fast bowler Hurst, who joined the panel in April 2004, will retire on July 9, shortly before his 61st birthday, after officiating in the fifth and final one-day international between England and Sri Lanka in Manchester.
"I am very appreciative of the opportunity that Cricket Australia and the ICC have offered me," Hurst, currently refereeing the West Indies and Pakistan Test series in the Caribbean, said.
"I now look forward to moving on to the next phase in my life, spending more time with family and pursuing a range of interests and hobbies," added Hurst, who played 12 Tests for Australia between 1974 and 1979.
Match referees supervise all major internationals, where they can discipline players who contravene the ICC's code of conduct.