Companies based in Espoo

Finnish video game developer and entertainment company

Finnish video game developer

Finnish software company

Fortum Oyj is a Finnish state-owned energy company located in Espoo, Finland. It mainly focuses on the Nordic region. Fortum operates power plants, including co-generation plants, and generates and sells electricity and heat. The company also sells waste services such as recycling, reutilisation, final disposal solutions and soil remediation and environmental constructions services, and other energy-related services and products e.g. consultancy services for power plants and electric vehicle charging. Fortum is listed on the Nasdaq Helsinki stock exchange.

Neste Oyj (international name: Neste Corporation; former names Neste Oil Corporation and Fortum Oil and Gas Oy; ) is an oil refining and marketing company located in Espoo, Finland. It produces, refines and markets oil products, provides engineering services, and licenses production technologies. Neste has operations in 14 countries.

thumb|Tietoevry global headquarters in Keilaniemi, Espoo, Finland, since 2016. Keilalahdentie 2-4, Espoo. Tieto Corporation (natively Tietoevry Oyj, Tietoevry June 2019 to June November 2025) is a Finnish IT software and service company providing IT and product engineering services. Tietoevry is domiciled in Espoo, Finland, and the company's shares are listed on the NASDAQ OMX Helsinki, NASDAQ OMX Stockholm and Oslo Stock Exchange. Tietoevry has approximately 15,000 employees across 20 countries, and has customers in the energy, forestry, banking, healthcare and public sectors.

Futuremark Oy was a Finnish software development company that produced computer benchmark applications for home, business, and press use. Futuremark was acquired by UL on 31 October 2014, and was formally merged into the company on 23 April 2018.

Gasum Oy is a Finnish state-owned energy company operating in the Nordics. Gasum owns 18 biogas refineries in Finland, Sweden and Denmark, and is the largest processor of biodegradable waste in the Nordic countries. In addition, Gasum sells wind power and provides various energy market services. It is in the process of building a gas filling station network that will also serve heavy-duty vehicles.

Tekla is a software product family that consists of programs for analysis and design, detailing and project communication. Tekla software is produced by Trimble, the publicly listed US-based technology company.

Ahtium (known until 2017 as the Talvivaara Mining Company; ) was a Finnish mining company that operated the Talvivaara nickel mine from the company's establishment in 2004 until the mining business was sold to the state-owned in 2015.

Finnish gas transmission company

Tecnotree Corporation is a Finnish vendor of software to telecommunications service providers. It operates in the BSS sector.