美国国家标准技术研究所，National Institute of Standards and Technology（NIST），前身为国家标准局（NBS，1901年~1988年），是一家测量标准实验室，属于美国商务部的非监管机构。该研究所的官方使命为：

Promote U.S. innovation and industrial competitiveness by advancing measurement science, standards, and technology in ways that enhance economic security and improve our quality of life.

The National Institute of Standards and Technology (NIST), known between 1901 and 1988 as the National Bureau of Standards (NBS), is a measurement standards laboratory, also known as a National Metrological Institute (NMI), which is a non-regulatory agency of the United States Department of Commerce. The institute's official mission is to: