The incident happened at about 9.50am on Archway Road near the junction of Langdon Park Road.
Two ambulances as well as London's Air Ambulance attended.
A London Ambulance Service spokeswoman said:
“Despite extensive efforts from our staff, sadly a man reported to be in his 40s was pronounced dead at the scene.”
He is the sixth cyclist to be killed in London this year.
More top news
An ITV News journalist worked as a Deliveroo rider to see what it's like - from induction to cycling through traffic and making deliveries.
Sutton United substitute goalkeeper Wayne Shaw has offered his resignation after eating a pie during a match.
Brixton's tribute to David Bowie will be a gravity-defying structure standing three storeys tall.