The 64DD is a magnetic floppy disk drive peripheral for the Nintendo 64 game console developed by Nintendo. It was announced in 1995, prior to the Nintendo 64's 1996 launch, and after numerous delays was released in Japan on December 13, 1999. The "64" references both the Nintendo 64 console and the 64 MB storage capacity of the disks, and "DD" is short for "disk drive" or "dynamic drive".

The Nintendo 64 (N64) is a home video game console developed and marketed by Nintendo. It was released in Japan on June 23, 1996, in North America on September 29, 1996, and in Europe and Australia on March 1, 1997. The successor to the Super Nintendo Entertainment System, it was the last major home console to use cartridges as its primary storage format until the Nintendo Switch in 2017. As a fifth-generation console, the Nintendo 64 primarily competed with the Sony PlayStation and the Sega Saturn.