In the last 24 hours, Thames Valley Police has been called to 14 incidents across the region where people have reported being intimidated or frightened by others dressed as clowns - including in Milton Keynes.
This follows the report of other incidents across the country which have been widely reported in the national media.
Chief superintendent Andy Boyd, said: “While we do not want to be accused of stopping people enjoying themselves we would also ask those same people to think of the impact of their behaviour on others and themselves.
“Their actions can cause fear and anxiety to other people, this could be perceived to be intimidating and threatening which could lead to public order offences, arrest and a criminal record.
“In addition, their behaviour is causing multiple reports to our call takers and is tying up police resources which could impact on calls to other incidents.
“While we realise that reports of this kind are not restricted to the Thames Valley area, the issues of intimidation, potential arrest and waste of public resources are the same across the country and we would urge people to refrain from such activity.”
The reports have been made from across the Thames Valley area including Bracknell, Milton Keynes, Abingdon and Chesham.