Harlthorpe is a hamlet and former civil parish, now in the parish of Foggathorpe, in the East Riding of Yorkshire, England. It is situated approximately 8 mi north-east of Selby town centre and 6 mi north of Howden town centre. It lies on the A163 road. In 1931 the parish had a population of 53. In 1823 Harlthorpe (then Harlethorpe), was in the parish of Bubwith and the Wapentake of Harthill. Population at the time was 93, with occupations including six farmers, a blacksmith, and a shoemaker. Harlthorpe was formerly a township in the parish of Bubwith, from 1866 Harlthorpe was a civil parish in its own right, on 1 April 1935 the parish was abolished and merged with Foggathorpe.