Osmond passed away Tuesday morning in Utah. He was 90-years-old.
A cause of death was not immediately available.
Family spokesman Kevin Sasaki told The Associated Press Osmond died at home, likely from natural causes incident to his age as he had not been ill.
"I spoke to Jimmy Osmond and he said his father had a great day yesterday and was in good spirits," Sasaki said.
The death was first reported by "Entertainment Tonight's" Web site and was confirmed by the AP through a spokeswoman for The Church of Jesus Christ of Latter-day Saints, of which Osmond was a member.
Donny Osmond was in the ET studio getting ready to tape a segment for a show when he learned of his father's death. Marie Osmond performed Monday night on "Dancing With the Stars."
Osmond married his wife, Olive on Dec. 1, 1944. She died in 2004.
The couple were the parents of nine children, many of whom became singing stars.
Alan, Wayne, Merrill, and Jay Osmond first became famous as The Osmond Brothers, a barbershop quartet singing at Disneyland and on The Andy Williams Show.
Their brother Donny Osmond joined the group at age six and later hosted The Donny and Marie Show with his sister. The youngest son, Jimmy Osmond is also a performer.