Advantest Corporation (株式会社アドバンテスト^?) (NYSE: ATE, TYO: 6857) is a leading manufacturer of automatic test equipment (ATE) for the semiconductor industry, and a manufacturer of measuring instruments used in the design, production and maintenance of electronic systems including fiber optic and wireless communications equipment and digital consumer products. Based in Tokyo, Advantest is a producer of semiconductor test systems for memory semiconductors, claiming a more than 50 percent market share^{[citation needed]}, and a leading supplier of test systems to the fast growing SoC segment with 20% of the market^{[citation needed]}. For the year ended March 31, 2009, the company reported a loss of ¥74.9 billion on revenues of ¥76.7 billion (US$780 million). For the year ending March 31, 2010, the company lost ¥11.5 billion on revenues of ¥53.2 billion.

For 21 consecutive years, Advantest has been ranked among VLSI Research’s 10 BEST semiconductor equipment companies. This ranking is based on customer satisfaction in terms of technical leadership, product performance, process and software support, and service. In SoC test, Advantest achieved the industry’s highest rating in cost-of-ownership, while in memory test, the company led the industry with the highest rating in the categories of uptime and usable throughput^{[citation needed]}.