"We are extremely sad to announce that Phillip Hughes has passed away at the age of 25," Cricket Australia said in a statement.
"Our thoughts go out to Phillip's family, friends, and the entire cricket community on this incredibly sad day."
Hughes was struck in the head while batting in a match at the Sydney Cricket Ground on Tuesday.
He underwent emergency surgery and was put in an induced coma but never regained consciousness.
"He was not in pain before he passed and was surrounded by his family and close friends," Cricket Australia said.
"As a cricket community we mourn his loss and extend our deepest sympathies to Phillips family and friends at this incredibly sad time."
We are deeply saddened by the passing of Phil Hughes. All our thoughts are with his family and friends pic.twitter.com/UB9wzuegZM
— McGrath Foundation (@McGrathFdn) November 27, 2014