Police were called at 17:09hrs on Monday, 28 December, to reports of an injured man in High Road, Wood Green, N22.
Officers and the London Ambulance Service (LAS) attended and found a man in his late 40s with a stab wound to his leg. He was taken to an east London hospital where he remains in a stable condition.
Detectives from Haringey CID are investigating.
No arrests have been made and enquires continue.