It's understood the incident happened around 2.30pm yesterday afternoon.
Police attended the stabbing on Blanche Walk, off Egerton Street, with the the North West air ambulance landing on Oldham Edge shortly afterwards.
The woman was taken to hospital from the scene. A spokesperson for Greater Manchester Police said her injuries are not believed to be life-threatening.
No arrests have been made.
In a statement, GMP said: "Officers were called to a report of a stabbing at an address on Blanche Walk in Oldham just before 2.30pm yesterday (15 June 2022). Emergency services attended and a 50-year-old woman was taken to hospital."
