In a media statement, NZSki said the man was found lying down in the snow by four people about 11.35am today at the junction of the Walkabout and Million Dollar runs.
Two were trained in first aid and immediately gave the man CPR before Coronet Peak assistant ski area manager Mark Sommerville arrived at 11.40am.
Two medical teams were also called and arrived with a defibrillator within five minutes, but were unable to revive the man.
NZSki chief executive Paul Anderson said their thoughts went out to the man's family.
"We are assisting the police with their investigation and will be making contact with the man's family to offer our condolences.
"We are also supporting our staff and guests on the mountain who may have been affected by this event.''
A police spokesman said the death had been referred to the Coroner.
