Seiko Instruments

Seiko Instruments Inc.
	Headquarters in Chiba
Native name	セイコーインスツル株式会社
Romanized name	Seikō Insutsuru Kabushiki-gaisha
Company type	Subsidiary
Industry	Electronics
Founded	1937; Tokyo, Japan
Headquarters	Chiba, Chiba, Japan
Key people	Yoshinobu Nakamura, Chairman; Tetsu Kobayashi, President;
Products	Micromechatronics devices, Network components, Information-related equipment and services, Printers, Scientific instruments, etc.
Revenue	¥51,700 million (nonconsolidated); ¥239,100 million (consolidated) (Fiscal year ended March 31, 2020)
Number of employees	557 (nonconsolidated); 3,234 (consolidated) as of April 1, 2020
Parent	Seiko Group Corporation
Website	www.sii.co.jp

Seiko Instruments Inc. (セイコーインスツル株式会社, Seikō Insutsuru Kabushiki-gaisha) (SII) is a Japanese company, which develops and commercializes semiconductor, micromechatronics, and precision machining technologies. It is one of the business units of Seiko Group Corporation (f/k/a Seiko Holdings).

Headquartered in the Makuhari business district, Mihama-ku, Chiba City, Chiba Prefecture, Japan, the company manufactures and sells electronic components (crystal oscillators, micromechatronics devices, piezo inkjet printheads, microbatteries, supercapacitors), precision parts, analysis and measurement instruments, machine tools, factory automation systems, printers, etc.