Gibb family announced Sunday: "with great sadness that Robin passed away today following his long battle with cancer and intestinal surgery."
The family have also asked that their privacy is respected at this very difficult time.
The singer, known for his trademark high-pitched vocal on songs such as Massachusetts, had undergone a number of health problems. He had been treated with chemotherapy to treat liver cancer and had undergone intestinal and colon surgery.
Earlier this year the star had been in a coma after contracting pneumonia.
The singer is best remembered for his work with his brothers in the Bee Gees, the soulful harmony group, whose amazingly successful career stretched from the mid-sixties until the present...
The Gibb brothers were born in the Isle of Man but grew up in Manchester, UK and then Brisbane, Australia...
The group were amongst the most successful recording artists of all time, selling hundreds of millions of albums.
As a songwriting team they enjoyed even greater success and were only surpassed in the UK by the Beatles in terms of their hit factory output. Their songs were hugely popular with fellow artists including Diana Ross, Barbra Streisand, Dionne Warwick, Dolly Parton and many others, who all had huge chart hits with Gibb penned efforts.