Police have set up a cordon in Exeter Road, near to Kilburn station, after the stabbing today (May 3) at 11.28am.
The victim, in his 20s, remains in hospital where his injuries will be assessed.
There has been no official confirmation on his condition at the moment.
No arrests have been made at this time.
A Metropolitan Police spokesperson said: “Police were called at 11:28hrs on Saturday, 3 May by the London Ambulance Service to a report of a man in his 20s with a stab wound in Exeter Road, Kilburn.
“He has been taken to hospital, where his injuries will be assessed.
“A crime scene is in place and enquiries are ongoing. No arrests have been made at this time.”