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J.D. Power is an American data analytics and consumer intelligence company founded in 1968 by James David Power III. The company, headquartered in Troy, Michigan, describes itself as "a global data & analytics company." It conducts surveys of customer satisfaction, product quality, and buyer behavior for the automotive, banking & payments, wealth & lending, telecommunications, insurance, health, travel and utilities sectors. The firm is best known for its customer satisfaction research and benchmarking on new-car quality and long-term dependability. Its service offerings include industry-wide syndicated studies, proprietary research, consulting, training, and automotive forecasting.

McGraw Hill Financial purchased from James David Power III in April 2005. Dave Habiger was named its president and CEO in March 2018, with the objective of continuing to aggressively build and enhance the company's data and analytics and customer insights leadership. On July 30, 2019, equity firm Thoma Bravo announced that they had reached an agreement to buy the company from XIO Group for an undisclosed sum. On December 16, 2019, J.D. Power announced a merger with Autodata Solutions, a provider of data and software for the automotive ecosystem. The merger marked the completion of J.D. Power's acquisition by Thoma Bravo, a leading private equity firm, and owner of Autodata Solutions.

J.D. Power reportedly charges hundreds of thousands of dollars to carmakers for access to its survey results, a large fee to mention their awards in advertisements, and has a service to help companies make improvements that should raise their rankings.