Several vehicles and pieces of equipment were seized by police during the rave in Twyford Wood at the weekend.
Police are now asking owners to come forward, as part of their criminal investigation into the incident.
In a statement, Lincolnshire Police is asking owners to call the non-emergency 101 number and quote incident number 446 of May 23.
A spokesman said: “We will want to know your full name, date of birth, contact address and numbers and the details of any vehicle or equipment that you are enquiring about. If you have any reference numbers that will be useful too.
“This will enable Lincolnshire Police to return any lawfully owned property to you as soon as we are able. Lincolnshire Police will contact you with updates with the possible return of your property, please ensure you have proof of legal ownership and bring any documents relating to vehicles (Driving Licence, Insurance, MOT, Registration documents) with you when arranged. If you have already contacted Lincolnshire Police and not provided all of the above then please call us again as this will assist us greatly.”