Lincolnshire Police believe that a missing 34-year-old man could be in Chapel St Leonards.
Enrico Princi is from Manchester and was last seen at 8am on Saturday, November 30.
The Italian man has a medium build and short black hair.
He was last seen wearing a dark-coloured top, dark canvas trousers and was carrying a dark-coloured rucksack.
Anyone with information should call 101.