Organic search is a process where a World Wide Web users finds a web site through unpaid search engine listings, rather than through pay per click advertisements displayed among the search results.

The field of search engine optimization is concerned with maximizing the visibility of a web site by making it's listings appear more frequently and more prominently in the organic search results. Some businesses have based their strategy upon the successful insertion of their web site listings into the organic search results for popular keywords through the practice of search optimization.