SanDisk闪迪是一家设计与销售闪存卡产品的美国跨国公司，于1988年由Eli Harari与非挥发性记忆体技术专家Sanjay Mehrotra创立，1995年11月在纳斯达克上市。

SanDisk闪迪生产许多不同类型的闪存，包括多种记忆卡与一系列USB随身碟。SanDisk闪迪均有销售高端与低端的快闪记忆体。SanDisk闪迪的总部位于加利福尼亚州米尔皮塔斯，并在世界各地拥有办事处与生产设施，如在爱尔兰共和国都柏林的欧洲总部。

2016年05月，西部数据正式宣布160亿美元并购SanDisk闪迪。

SanDisk is an American manufacturer of flash memory products, including memory cards and readers, USB flash drives, and solid state drives. As of February 2015, it is third-largest manufacturer of flash memory.

On May 12, 2016, SanDisk was acquired by hard drive manufacturer Western Digital in a US$19 billion deal.

SanDisk was founded in 1988 by Dr. Eli Harari, Sanjay Mehrotra and Jack Yuan. SanDisk co-founder Dr. Eli Harari developed the Floating Gate EEPROM which proved the practicality, reliability and endurance of semiconductor-based data storage.