Alvin is a chipmunk in Alvin and the Chipmunks series. He's the eldest of the chipmunks, and his brothers are Simon and Theodore. His chipette counterpart is Brittany. He and his brothers appeared with Pooh and Tigger in Cartoon All-Stars to the Rescue
- Alvin was voiced by Ross Bagdasarian, Sr., and now he's voiced by his son, Ross Bagdasarian, Jr. They both also voice/voiced Simon. He is also voiced by Justin Long, who also voiced Humphrey from Alpha and Omega, in the live-action film series.