Harestua is a town in Lunner kommune, Akershus county, Norway. It has 2318 inhabitants. Harestua is located 46 kilometeres north of Oslo, and functions as a commuter town to the capital. It is served by Harestua Station on the Gjøvik Line.

Harestua maintains 6 neighbourhoods; Gamlefeltet, Nyfeltet, Vestbygda, Bjørgeseter, Haneknemoen, Haganskogen and Stryken. Harestua has a small town centre with services such as a petrol station, grocery stores and fast food outlets.

During the 1940 German invasion of Norway, Harestua was the location of several skirmishes between German and Norwegian forces.

Harestua also has a combined elementary- and junior high school. The school has approximately 400 pupils. 60°12′8″N 10°42′51″E / 60.20222°N 10.71417°E / 60.20222; 10.71417

The Harestua Solar Observatory is located nearby.

The Lunner Motorsport on Hadelandsvegen 11, to the south of the town, is a prominent motor sport venue. It includes a motorcycle speedway track that held the final of the Norwegian Individual Speedway Championship in 1998, 2000, 2009, 2018 and 2020.