Three vehicles belonging to Northampton Town players were stolen from a car park at Moulton College after the keys were taken from a changing room.
Police are appealing for witnesses following the theft of the cars from the college car park in West Street on Thursday morning.
They included a white Vauxhall Insignia, a black Mercedes C220 and a white Volkswagen Scirocco.
The keys to the vehicles where stolen along with phones and cash from a changing room sometime between 10am and midday.
Moulton College is used as a training facility by the Cobblers.
Officers are appealing for witnesses and anyone who may have seen anything suspicious in the area or have information about the stolen property is asked to call Northamptonshire Police on 101. Alternatively, they can call the independent charity Crimestoppers anonymously on 0800 555 111 or use the anonymous online form at www.crimestoppers-uk.org.