They say the man, clad in a grey T-shirt and black tracksuit bottoms, was not wearing a helmet as he went through the area.
In a Twitter post the police said: "We would like to find this man after he was riding around Woodingdean.
"He is putting himself and other road users in danger by riding without a helmet.
It follows a spate of similar incidents during a week of road safety patrols by officers. It includes an off-road bike being stopped for having no licence, registration, insurance or helmet in Bevendean on Tuesday.
They also stopped a rider in Coldean on Tuesday because his registration plate was too small. Officers discussed road safety with the lad involved.
Anyone who recognises the man in Woodingdean is asked to contact the police and quote 47180086330.