Main Page | See live article | Alphabetical index MAC, has several meanings, including: Media Access Control - hence MAC address (erroneously) Apple Macintosh mandatory access control Mid-American Conference, US collegiate sports conference Middle Atlantic Conference, US collegiate sports conference, also its' parent group, the Middle Atlantic Corporation Multiply-accumulate, especially in digital signal processor contexts MAC (cosmetics) Message Authentication Code, in cryptography This article is from Wikipedia. All text is available under the terms of the GNU Free Documentation License.