The youngster, whose name has not been released by police, was pronounced dead following the collision on West Bromwich Road, Walsall, at about 10am on Sunday.
In a statement appealing for information from witnesses, West Midlands Police said: “The boy was sadly confirmed dead shortly afterwards and we’ll have specialist officers supporting his family during this devastating time.
“Our thoughts are with them and his friends.
“The driver of the lorry remained at the scene and is helping with our inquiries into exactly what happened.
“We’re keen to hear from anyone who was in the area at the time and has not already spoken to our officers. We’re also asking for you to send us any dashcam footage from the area at the time.”