Seven vans were broken into overnight on Sunday across the county, including three in South Holland villages Moulton and Pinchbeck.
Police said a Renault van was broken into in West Cobgate, Moulton, and a quantity of power tools were stolen.
Two Vauxhall Vivaro vans were broken into in Benner Road, Pinchbeck, but they were empty so nothing was taken.
Other thefts occured overnight Sunday/Monday (November 4/5) in Swineshead, Stamford, Fosdyke and Bicker.
Sally Picker, crime reduction tactical advisor for Lincolnshire Police, said: “Vans are often targeted by opportunistic thieves who are looking for valuable tools.
“We appreciate that it is often difficult to remove all tools when the van is left overnight, although this is obviously the ideal.
“If you see anyone acting suspiciously, witness a crime or are offered goods under suspicious circumstances then please call us on 101.”
Anyone with information about the crimes can contact the police on 101 with incident number 72 of 4/11 (Moulton) and incident number 76 of 4/11 (Pinchbeck).