Harlowbury, historically Herlaue Abbatis, was a medieval manor located in modern-day Harlow, Essex, England.

The area's history dates back at least to the Iron Age, and a Roman villa is located not far from the site.

The manorial estate and Harlowbury Chapel, a Norman-era church and the oldest building in Harlow, are now scheduled monuments.

Excavations in the 19th century unveiled the remains of a Roman villa or temple, including a complex of several rectangular buildings and tesselated paths next to a roadway to Pishiobury.

[7] In 1044, thegn Thurstan son of Wine gave the land to the Abbey of Bury St Edmunds in 1044.

It was situated immediately northeast of the medieval village, although part of its estate encompassed woodlands on the south side of the settlement's common land.

[6] The Domesday Book recorded it as the main settlement in the parish of Harlow, having "31 villeins, bordars, and serfs... [and] 8 ploughteams, a water mill, 4 rounceys, 25 beasts, 50 swine, 60 sheep, 3 colts, and 5 hives of bees".

[6] The Bury St Edmunds Abbey dissolved in 1539, ending its involvement in the manor, which entered a freehold under the Crown.

[6] By this time, Harlowbury had acquired a large amount of debt, and the Champernoun and Way families sold the manor to Francis North, 1st Baron Guilford, in 1680.

After John's death in 1848, the manor was transferred to Lady Maria Bute's nephew William North, and he took possession after coming of age in 1861.

Both Harlowbury and Moor Hall passed through the Perry-Watlington family until 1914, when both fell into the possession of Robert Ethelston's trustees.

Originally, as an abbey, the building featured monastic aisles, which were likely demolished in the late 16th century, at the same time a fireplace and upper floor were installed.

An original eastern wing of the building was demolished around the turn of the 15th century, although it was partially restored about 100 years later.