The American Society for Testing and Materials (ASTM) is a standards organization that develops and publishes technical standards for a wide range of materials, products, systems, and services.

The headquarters of the organization is located in the United States of America.

ASTM differs from other organizations such as BSI (1901) DIN (1917) AFNOR (1926) in that it is not a national standards body, this role being taken in the United States by the American National Standards Institute (ANSI). ASTM has an important role among standard developers in the United States, and claims to be the world's largest standards development company.Using a consensus-building process, ASTM supports thousands of volunteers and technical committees, which rely on members from around the world and collectively Develop and maintain more than 12,000 standards The ASTM Standards Yearbook publishes every year in print, hard disk and on the Internet Electronic version is available by subscription, and a complete set of books or CDs costs 9,000 $, and included 81 volumes.