A murder investigation is underway after Metropolian Police found the teenagers, each with stab wounds, in separate locations around a mile apart just after 5pm.
Officers attended with the London Ambulance Service and London’s Air Ambulance.
Despite the best efforts of the emergency services, both teenagers were pronounced dead, the Met said in a statement.
“Crime scenes are in place at both locations and an investigation into the deaths of both males is under way.
“Their next of kin will be provided with support from specialist officers.
“Given the proximity in time and distance of the incidents, officers will be seeking to urgently establish any link between them.”
A Section 60 order, providing officers with additional search powers, is in place until 8am on Sunday.
Anyone with information should call 101, giving the reference 4943/26NOV. Information can also be provided to Crimestoppers, anonymously, on 0800 555 111.