The star, who launched his career with Wham! in the 1980s and had huge success as a solo performer, "passed away peacefully" on Christmas Day in Goring, Oxfordshire, his publicist said.
His manager, Michael Lippman, said he had died of heart failure.
Many celebrities are grieving over this loss like Sir Elton John who said: "I am in deep shock. I have lost a beloved friend - the kindest, most generous soul and a brilliant artist. My heart goes out to his family and all of his fans."
George Micheal is mostly known for his songs like "Careless Whisper" - "Last Christmas" - "Wake me up before you Go-Go"...
Because of you George, generations will forever be able to dance again. We thank you for your beautiful songs and your dedication to bringing a different side to pop music. We will truly miss you and send our deepest condolences to the loss of your family.