"AKB" is a short form for Akihabara. During the first phase of this project, the name "Akihabara 48" was decided. It is popularly thought that the number 48 means the number of members, but instead it refers to the name of the group's President's office; "office48". The office is located in Chiba Prefecture, and in Japanese pronunciation, "Chiba" and "48" sound similar.