Nokia Corporation (pronunciation /'nɔkiɑ/) OMX: NOK1V, nyse: NOK, FWB: NOA3) is a Finnish multinational communications corporation, headquartered in Keilaniemi, Espoo, a city neighbouring Finland's capital Helsinki. Nokia is focused on wireless and wired telecommunications, with 112,262 employees in 120 countries, sales in more than 150 countries and global annual revenue of 51.1 billion euros and operating profit of 8.0 billion as of 2007. It is the world's largest manufacturer of mobile telephones: its global device market share was about 40% in Q2 of 2008, up from 38% in Q2 2007 and up from 39% sequentially. Nokia produces mobile phones for every major market segment and protocol, including GSM, CDMA, and W-CDMA (UMTS). Nokia's subsidiary Nokia Siemens Networks produces telecommunications network equipments, solutions and services.

Nokia has sites for research and development, manufacturing and sales in many continents throughout the world. As of March 2008, Nokia had R&D centers in 10 countries and employed 30,415 people in research and development, representing approximately 27% of Nokia's total workforce. Nokia Research Center, founded in 1986, is Nokia's industrial research unit of about 800 researchers, engineers and scientists. It has sites in seven countries: Finland, Denmark, Germany, China, Japan, United Kingdom and United States. Besides its NRCs, in 2001 Nokia founded (and owns) INdT - Nokia Institute of Technology, a R&D institute located in Brazil. Nokia production facilities are located at Espoo, Oulu and Salo, Finland; Manaus, Brazil; Beijing, Dongguan and Suzhou, China; Fleet, England; Bochum (closing planned for mid-2008), Germany; Komárom, Hungary; Chennai, India; Reynosa, Mexico; Jucu, Romania and Masan, South Korea. Nokia's Design Department remains in Salo, Finland.

Nokia plays a very large role in the economy of Finland: it is by far the largest Finnish company, accounting for about a third of the market capitalization of the Helsinki Stock Exchange (OMX Helsinki) as of 2007; a unique situation for an industrialized country. It is an important employer in Finland and several small companies have grown into large ones as Nokia's subcontractors. Nokia increased Finland's GDP by more than 1.5% in 1999 alone. In 2004 Nokia's share of the Finland's GDP was 3.5% and accounted for almost a quarter of Finland's exports in 2003. In 2006, Nokia generated revenue that for the first time exceeded the state budget of Finland.

Finns have ranked Nokia many times as the best Finnish brand and employer. Valued at $35.9 billion, the Nokia brand is listed as the 5th most valuable global brand in Interbrand/BusinessWeek's Best Global Brands list of 2008 (1st non-US company). It is the number one brand in Asia (as of 2007) and Europe (as of 2008), the 23rd most admirable company worldwide in Fortune's World's Most Admired Companies list of 2008 (tied with Exxon Mobil; 2nd in Network Communications, 5th non-US company), and is the world's 88th largest company in Fortune Global 500 list of 2008, up from 119 of the previous year. As of 2008, AMR Research ranks Nokia's global supply chain number two in the world.