Firefighters went to a house fire in Canford Road, Bradford, after an emergency call was received at about 4pm on Friday, May 10.
Crews from Bingley, Odsal and Stanningley attended the semi-detached house.
A 59-year-old woman was given emergency first aid at the scene but died.
The fire is not believed to be suspicious.
A Fire Investigation Officer attended the scene.
Area Manager for Service Delivery, Chris Kirby, said: “Firefighters attended the scene and despite their very best efforts, sadly the female occupier could not be saved.
“Our condolences go out to her friends and family at this difficult time.
“We will be providing a full report to the Coroner which will examine the circumstances that led to the fire.”