Cipher Data Products, Inc., was an American computer company based in San Diego, California, and active from 1968 to 1992. The company was once a leading manufacturer of magnetic-tape data drives and media for minicomputers, becoming a pioneer in tape streamer technology in the early 1980s. In the late 1980s, they also briefly manufactured WORM optical discs, through a joint venture with 3M. In 1990, they were acquired by Archive Corporation for $120 million.

A tape drive is a data storage device that reads and writes data on a magnetic tape. Magnetic-tape data storage is typically used for offline, archival data storage. Tape media generally has a favorable unit cost and a long archival stability.