SMX Search Marketing Expo's are a series of international events targeted at the search marketing industry, including keynote speakers and panels on a wide range of search-related topics. One of the premiere search engine conferences that started in June of 2007 in Seattle.

SMX is a product of Third Door Media and is programmed by Search Engine Land's Editor in Chief Danny Sullivan and executive editor Chris Sherman.

SMX Events include:

• SMX Advanced in Seattle

• SMX Local and Mobile in San Francisco

• SMX East in New York City

• SMX London in London, England

• SMX China in Xiamen

• SMX Sydney

• SMX West in Santa Clara

• SMX Social Media Marketing held in Long Beach, California