The Lincolnshire Wolds is a range of hills in the county of Lincolnshire, England. It is a designated Area of Outstanding Natural Beauty (AONB), and the highest area of land in eastern England between Yorkshire and Kent. They run roughly parallel with the North Sea coast, from the River Humber in the north-west to the edge of the Lincolnshire Fens in the south-east.
The Wolds comprise a series of low hills and steep valleys underlain by calcareous (chalk and limestone) and sandstone rock, laid down in the Cretaceous period. The characteristic open valleys of the Wolds were created during the last glacial period through the action of glaciation and meltwater.
Geologically, the Lincolnshire Wolds is a continuation of the Yorkshire Wolds which runs through the East Riding of Yorkshire; the point at which the ranges of hill crosses the Humber is known as the Humber Gap.
The area is also popular with hikers: the Viking Way long-distance footpath runs from Barton-upon-Humber in North Lincolnshire across the Lincolnshire Wolds and into Rutland.