A woman in her 80s sustained minor injuries when she was hit by a mobility scooter in Sleaford.
Lincolnshire Police released CCTV images after the incident in Southgate at around 2.15pm on Friday, August 2.
They want to speak to the man pictured and have asked any witnesses to come forward.
A second woman in her 70s was also knocked over by a mobility scooter but was not injured.
Anyone with information is being urged to either call 101 and quote incident 334 of August 2 or to send an email to PC Graham Oakes by clicking or tapping here.