Addison Group is an American human resource consulting firm headquartered in Chicago , Illinois , USA. Founded in 1999, it specializes in professional staffing and search services for positions related to business administration, engineering, finance, healthcare and information technology.  Since 2007, Addison Group has-been included yearly on the Inc. 5000 list of the fastest-growing private companies in the United States. 
Addison Group was founded in 1999 as Addison Professional Financial Search, LLC.  The Chicago-based company established a national presence, adding offices in Boston and Houston before being acquired by the private equity management firm Lake Capital in 2006. In 2012 the company was officially rebranded as Addison Group following the purchase of an unrelated Entity of the same name. 
In September 2013, New York-based Trilantic Capital Partners announced a strategic investment partnership with Addison Group, buying a controlling stake from Lake Capital for an undisclosed amount. Trilantic expressed plans to leverage Addison as a platform for making additional acquisitions in the staffing industry.  The first of these additions was the acquisition of Reston, Virginia-based HireStrategy, which expanded the presence of the Addison Group into the Washington, DC metropolitan area for the first time.  Shortly after, Addison Group acquired the Bay Area Executive Search firm, CVPartners, Inc. CVPartners is headquartered in San Francisco, with 4 offices along the west coast. 
Addison Group, Nashville, New York, Oklahoma City, Reston, Rockville, San Francisco, Schaumburg, Seattle, Dallas, Denver, Houston, Tulsa, and Washington, DC. 
- Professional employ organization
- Employment agency
- Temporary work
- Jump up^ “Addison Group: About Us” . Addison Group (Company Website) . Retrieved 29 August 2014 .
- Jump up^ “2014 Inc. 5000: Addison Search” . Inc. Magazine . Retrieved 29 August 2014 .
- Jump up^ “Company Overview of Addison Group, LLC” . Bloomberg Businessweek . Retrieved 29 August 2014 .
- Jump up^ “Addison Search Launches New Brand Identity, Takes on Addison Group Name” . Reuters . 2012-07-16.
- Jump up^ “Addison Group Announces Partnership With Trilantic Capital Partners (Press Release)” . Trilantic Capital Partners . 2013-09-30.
- Jump up^ Halzack, Sarah (2014-04-21). “Reston Staffing Firm HireStrategy Acquired by Addison Group” . The Washington Post .
- Jump up^ http://www.addisongroup.com/news/addison-group-expands-to-west-coast-via-acquisition
- Jump up^ http://www.addisongroup.com/about-us/
- Official website