Elpida Memory, Inc. (エルピーダメモリ株式会社, Erupīda Memori Kabushiki-gaisha^?) is a corporation established in 1999 that develops, designs, manufactures and sells dynamic random-access memory (DRAM) products. It is also a semiconductor foundry. With headquarters in Yaesu, Chūō, Tokyo, Japan, it was formed under the name NEC Hitachi Memory in 1999 by the merger of the Hitachi, Ltd. and NEC DRAM businesses. In the following year it took its present name, and in 2003 took on the Mitsubishi DRAM business. In 2004 it listed its shares in the first section of the Tokyo Stock Exchange. In 2012, those shares were delisted as a result of its bankruptcy.

Currently, the company's CEO is Yukio Sakamoto.

Elpida Memory was founded in 1999 and began development operations for DRAM products in 2000.

In 2001, the company began construction of its 300mm wafer fabrication plant. Later that year, it began sales operations in domestic markets.

In 2003, the company took over Mitsubishi Electric Corporation's DRAM operations and employed Mitsubishi development engineers.