Belinda Emmett, wife of television personality Rove McManus, has died in St Vincents Hospital, Sydney.
Rove McManus, her parents and siblings were at her side when she died just after dawn.
Emmett is best known for her work in the television programs All Saints and Home and Away.
She was diagnosed with breast cancer in 1998, at age 24.
After initial treatment Emmett returned to work, but was forced to leave in 2001 when doctors confirmed the disease had spread to her bones.
She and longtime boyfriend McManus married in January 2005.
Prime Minister John Howard said he and Mrs Howard were saddened by Emmett’s death.
“She fought a very courageous battle against cancer,” Mr Howard said.
“On behalf of Janette and myself, I extend my deepest sympathies to her husband, Rove McManus, and her family and friends.”