This is a list of research companies that provide research and/or advisory services :

• 13D Research
• Arbitron
• Current Analysis
• Datamonitor
• Dittberner Associates
• Forrester Research
• Frost & Sullivan
• Gartner
• HispanTelligence
• Deloitte
• Enfasis Puerto Rico (research and program evaluation)
• ERC
• Ernst & Young
• Euromonitor International
• PricewaterhouseCoopers
• GfK
• Harris Interactive
• ICR/International Communications Research
• IMI TAMI Institute for Research and Development Ltd.
• IMS Health
• Ipsos
• J.D. Power
• Jupiter Research
• Maritz Research
• Media Evaluation Research
• Media Tenor Institute for Media Analysis
• Nemertes Research
• Segment Y - Automotive Intelligence, http://www.segmenty.com

• Synovate
• SunKosi
• Technology Evaluation Centers
• The 451 Group
• VNU
• Westat

See also: Lists of companies

Lists of companies by industry