Dutchman Meulensteen was removed from his managerial post on Friday, with Felix Magath replacing him, but it was believed he would stay on as part of the incoming German's backroom staff.
However, it has been confirmed that the former Manchester United assistant has left Craven Cottage along with his ex-assistant Wilkins and technical director Curbishley.
"Fulham have officially announced the appointments of Tomas Oral as first-team coach and Werner Leuthard as conditioning coach, both reporting to new first-team manager Felix Magath, effective immediately," read a Fulham statement.
"The club simultaneously made the formal announcement that Rene Meulensteen, Alan Curbishley, Ray Wilkins, Mick Priest and Jonathan Hill have departed Fulham. Terms of the parting are complete and confidential."
Fulham chairman Shahid Khan added: "I'm very grateful to Rene, Alan and Ray, as well as Mick and Jonathan, for their commitment to Fulham. Their efforts were admirable and appreciated, and I wish them the best.
"Felix has come to Fulham with purpose and exceptional confidence, and I know he's extremely pleased to have Tomas Oral and Werner Leuthard join him for the mission ahead."
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