The iPod Nano (trademarked, marketed, and stylized as iPod nano) is a portable media player designed and marketed by Apple Inc. The first generation iPod Nano was introduced on September 7, 2005 as a replacement for the iPod Mini. It uses flash memory for storage. The iPod Nano has gone through six models, or generations, since its introduction. The current "sixth generation" iPod Nano supports FM radio, a pedometer, and a 39.1-millimetre (1.54 in) square 240×240 display with a multitouch interface.

Development work on the design of the iPod Nano started only nine months before its launch date. The Nano was launched in two colors (black and white) with two available sizes: 2 GB (roughly 500 songs) and 4 GB (1000 songs). On February 7, 2006, Apple updated the lineup with the 1 GB model (240 songs). Apple also released some accessories, including armbands and silicone "tubes" designed to bring color to the Nano and protect it from scratches, as well as a combination lanyard-earphone accessory that hangs around the neck and avoids the problem of tangled earphone cords.

iPod is a line of portable media players created and marketed by Apple Inc.. The product line-up consists of the hard drive-based iPod classic, the touchscreen iPod touch, the compact iPod nano and the ultra-compact iPod shuffle. iPod classic models store media on an internal hard drive, while all other models use flash memory to enable their smaller size (the discontinued mini used a Microdrive miniature hard drive). As with many other digital music players, iPods can serve as external data storage devices. Storage capacity varies by model, ranging from 2 GB for the iPod shuffle to 160 GB for the iPod classic. The iPod line was announced by Apple on October 23, 2001, and released on November 10, 2001.

All of the models have been redesigned multiple times since their introduction. The most recent iPod redesigns were introduced on September 1, 2010. Apple's iTunes software can be used to transfer music to the devices from computers using certain versions of Apple Macintosh and Microsoft Windows operating systems. For users who choose not to use iTunes or whose computers cannot run iTunes, several open source alternatives are available for the iPod. iTunes and its alternatives may also transfer photos, videos, games, contact information, e-mail settings, Web bookmarks, and calendars to iPod models supporting those features. Discontinued models of the line include the iPod mini and the iPod photo, the former being replaced by the iPod nano, and the latter reintegrated into the main iPod line (now the iPod classic).

Nano may refer to: