Espoo Finland Swedish: is the second largest city and municipality in Finland. It is part of the Finnish Capital Region, along with the cities of Helsinki, Vantaa, and Kauniainen. Most of its population lives in the inner urban core of the Helsinki metropolitan area. Espoo shares its eastern border with Helsinki and Vantaa, while enclosing Kauniainen. Other bordering municipalities of Espoo are Nurmijärvi and Vihti in the north, and Kirkkonummi in the west. The city is located on the shore of the Gulf of Finland, in the region of Uusimaa, and has a population of 284,444.

Espoo encompasses 528 square kilometres (204 sq mi), of which 312 km² (120 sq mi) is land. The national park of Nuuksio is situated in northwestern Espoo.

Espoo does not have a traditional city center, having instead several local regional centers. Espoo is thus divided into seven major areas: Vanha-Espoo (with administrative center), Suur-Espoonlahti, Pohjois-Espoo, Suur-Kauklahti, Suur-Leppävaara, Suur-Matinkylä, and Suur-Tapiola.

Aalto University is based in Otaniemi, Espoo, along with a thriving science community that includes numerous startups and organizations such as VTT – the Technical Research Center of Finland. Several major companies are based in Espoo, including Nokia, HMD Global, Tieto, KONE, Neste, Fortum, Orion Corporation, Outokumpu, and Foreca, as well as video game developers Rovio and Remedy Entertainment.