Police in WA's remote Kimberley
Police said the 25-year-old woman was found at a residence in Mulga Street on Friday afternoon at around 4.40pm with a serious leg injury "consistent with a stab wound."
She was taken to hospital by St John Ambulance for treatment but died later in the day.
Homicide Squad detectives and forensic specialists from Perth travelled to Kununurra on Friday.
A 30-year-old man who police said was known to the alleged victim has been charged with one count of manslaughter.
He was refused bail and is due to appear in the Perth Magistrate's Court via video link on Sunday.