Upper Hutt Blockhouse, Military fortification in Upper Hutt City, New Zealand.

Upper Hutt Blockhouse is a two-story timber building with shingle and infill walls built to withstand rifle fire during the colonial period. The structure was designed for the Hutt Battalion of Wellington Militia and uses simple, practical construction methods from that era.

Designed by Col. Thomas Mould and built in late 1860 by W. Taylor, who had also built the Lower Hutt blockhouse, it formed part of a stockade on McHardy's Clearing. The Hutt Battalion of the Wellington Militia occupied it from December 1860 to May 1861 without coming under hostile attack. From 1861 to 1880 it served the police as a residence, station and circuit courthouse.

The blockhouse stands on land that was the "old Government Stockade" reserve, and its story is one of changing civic uses rather than combat. In 1861 the Bishop of Wellington asked to rent the stockade for a Sunday School and place of Divine Worship, but it went to the Police instead, serving as residence, station and circuit courthouse until the constable's post was cut in 1880. From 1953 to the late 1990s Boy Scouts and Girl Guides used the building, and a service club met there.

The site is located on Blockhouse Lane off McHardie Street and can be visited through advance arrangements with Heritage New Zealand. It is wise to plan your visit ahead of time since access may be limited.

The building had multiple lives: after military use it became a police station and later hosted youth groups like the Boy Scouts until the 1990s. This range of purposes shows how communities repurposed the historic structure over the decades.