Daequan George was last seen in Stamford Close, Tottenham at 20:00 BST on Thursday after playing football with his friends.
Scotland Yard conducted house-to-house enquiries when he failed to return home overnight.
Daequan was found "safe and well" at about 11:30 on Friday in the local area.
A nine-year-old boy who went missing from a playground in north London on Thursday has been found by police.