Amsterdam-West is a borough (stadsdeel) of Amsterdam, Netherlands, to the west of the centre of the city. This borough was formed in 2010 through the merging of four former boroughs Oud West, Westerpark, De Baarsjes and Bos en Lommer. This part of Amsterdam was built roughly between the end of the 19th century and 1960. In 2013, the borough had approximately 138,500 inhabitants. With almost 16,000 inhabitants per km2, West is also the most densely populated borough of Amsterdam.
The borough of Amsterdam-West consists primarily of the pre-World War II part of Amsterdam to the west of the Singelgracht canal. The western expansion beyond the 17th-century Amsterdam canal belt started in the last quarter of the 19th century. The first neighborhoods to be built were Spaarndammerbuurt, parts of Zeeheldenbuurt, Staatsliedenbuurt, Frederik Hendrikbuurt, Kinkerbuurt and Overtoombuurt.
These neighborhoods are characterized by revolutiebouw (literally: 'revolution architecture'): quickly and cheaply constructed 19th-century apartment blocks for worker's and middle-class families once considered of substandard quality, but currently in high demand for their charming, urban outlook. Between 1990 and 2010, these neighborhoods formed the boroughs of Westerpark and Oud-West.