Country code: +358
Yellow and White Pages for businesses (Yritykset) and people (Henkilöt). Includes reverse search. Enter the name of the person or their telephone number (henkilon nimi tai puhelinnumero) and the location (paikkakunta) when looking for people. When searching businesses enter the company name or keyword (yrityksen nimi tai hakusana) and the location. Click on hae (search). Also includes maps and routes. Requires registration to get full data results.
Business directory for Finland. Type in what products and services/products - Hae yrityksiä ja palveluita/tuotteita you're looking for and click hae to search. In Finnish, English and Swedish.
Business directory in Finnish which includes financial information on the companies. Drop down search box gives the options of searching the whole site Koko sisällöstä, industries Toimialoista, corporate names Yritysten nimistä, Y codes Y-tunnuksista etc. before entering the name of the company. Click on Hae to search once you have entered your search requirements.
Comprehensive link site to all the regional phonebooks in Finland. Each sub site has a free business search but if you want to look up people or do a reverse number search, you will need to register (currently 0.30 Euro and free to search after that).