An online business directory is a website which lists categorized businesses along useful information such as a business location, contact details, website URL etc. Business may be compiled either manually or through an automated online search software.

Some directories include a section for user reviews, comments, and feedback.

Many business directories offer complimentary listings in addition to the premium options. There are many business directories and some of these have moved over to the internet and away from printed format. Whilst not being search engines, business directories often have a search function, enabling users to search businesses by Zip Code, country, state, area or city.