The 17-year-old suffered stab wounds to his head, arms and hands in the attack which happened in Wren's Nest, Dudley, at 7pm yesterday.
He was treated for his injuries in hospital and has since been discharged.
No arrests have been made and police are appealing for witnesses to the attack to come forward.
West Midlands Ambulance Service said it received multiple calls regarding the stabbing last night, with the incident appearing to have taken place at the junction of Summer Road and Willow Road near the Post Office.
A West Midlands Police spokesman said: "Police were called after a teenager suffered stab wound injuries to his arms, hands and head on Willow Road, Dudley at 7pm yesterday.
"The 17-year-old was taken to hospital to be treated for his injuries and has since been discharged.
"Investigations are ongoing and anyone with information can contact us via Live Chat at west-midlands.police.uk between 8am and midnight, call 101 anytime or contact Crimestoppers anonymously on 0800 555 111. Please quote crime reference number 20DY/308470T/19."
A West Midlands Ambulance Service spokesman added: "We were called to Summer Road at 7.06pm last night to reports of an assault.
"We sent one ambulance, a paramedic officer and a MERIT (Medical Emergency Response Incident Team) trauma doctor to the scene.
"On arrival we discovered a patient, a teenage male, who we treated for multiple injuries which were not life-threatening.
"He was taken to hospital for further assessment."