The victim, in his 30s, suffered the injuries – not believed to be life-threatening – on Hill Top on Sunday at around 8pm.
Part of the road near the Wallface alleyway, and the Hill Top supermarket, was sealed off as investigations started up.
A spokesman for West Midlands Police said: " We're investigating after a man was assaulted in Hill Top, West Bromwich, at around 8pm.
"A man in his 30s was taken to hospital with head injuries which are not life-threatening. We're carrying out CCTV and other enquiries and anyone with information can contact us via Live Chat on our website and quote 20/292293/23."
One ambulance attended the scene and one man was taken to hospital for further assessment, with his injuries "not believed to be serious".
