The Commodore 64 is an 8-bit home computer released by Commodore International in August, 1982, at a price of US$595. Preceded by the Commodore VIC-20 and Commodore MAX Machine, the C64 features 64 kilobytes (65,536 bytes) of RAM with sound and graphics performance that were superior to IBM-compatible computers of that time.

The Commodore 64 is commonly referred to as the C64 or C=64 and occasionally known as CBM 64 (Commodore Business Machines Model number 64), or VIC-64.^[1] It has also been affectionately nicknamed the "breadbox" and "bullnose" due to its shape.

During the Commodore 64's lifetime sales totaled 30 million units, making it the best-selling single personal computer model of all time.^[2] At one point (1983/84/85), the Commodore 64 dominated the market with approximately 40% share,^[3][4] even outselling IBM PCs and Apple computers. Sam Tramiel, a former Commodore president said in a 1989 interview "When I was at Commodore we were building 400,000 C64s a month for a couple of years."^[5] Part of its success was due to the fact that it was sold in retail stores instead of electronics stores, and that Commodore produced many of its parts in-house to control supplies and cost.

Approximately 10,000 commercial software titles were made for the Commodore 64^{[citation needed]} including development tools, office applications, and games. The machine is also credited with popularizing the computer demo scene. The Commodore 64 is still used today by some computer hobbyists,^[6] and various C64 emulators allow anyone with a modern computer to run these programs on their desktop. Since 28 March 2008, Commodore 64 games have been available to buy from the Wii Virtual Console in Europe; the first games available were Uridium and International Karate.^[7][8]