Harpley is a village and civil parish in the English county of Norfolk. It covers an area of 9.29 km2 (3.59 sq mi) and had a population of 353 in 157 households at the 2001 UK census, the population reducing to 338 at the 2011 UK census. For the purposes of local government, it falls within the district of King's Lynn and West Norfolk.
The village is 12 miles (19 km) northeast of King's Lynn. The village is on the south side of the A148 King's Lynn to Cromer road. There is an Anglican church, and a primary school (which celebrated its centenary in 2008). Nearby points of interest include Houghton Hall located north of the parish and the Peddars Way (a long distance footpath), accessible from the A148 just west of town.