ADATA Technology Co., Ltd. (Traditional Chinese: 威剛科技股份有限公司) is a publicly listed (3260:TAI) fabless Taiwanese memory and storage manufacturer, founded in May 2001 by Simon Chen (Traditional Chinese: 陳立白). Its main product line consists of DRAM modules, USB Flash drives, hard disk drives, solid state drives, memory cards and mobile accessories. It is also expanding into new areas, including robotics and electric powertrain systems. In addition to its main ADATA brand, the company also sells PC gaming hardware and accessories under its XPG brand.

In 2017 It was the 2nd largest DRAM manufacturer in the world and had a market capitalization of US$680 million. In recent years ADATA has extended its business to Europe and the Americas, while competing strongly in Asia with Samsung.