Nogizaka46 is a Japanese Idol Group produced by Akimoto Yasushi and the 1st rival group of AKB48. The 1st generation members were announced on August 21, 2011. The debut single of the group, Guru Guru Curtain, was released on February 15, 2012. Their anniversary is celebrated on February 22. They are currently signed under N46Div. (Sony Music Entertainment Japan).
Nogizaka46 was named after the place where the SME Nogizaka Building, which houses Sony Music Japan’s office, is located in. Their producer Yasushi Akimoto also said that the number "46" was chosen as a direct challenge to AKB48.
Nogizaka46 has had a total of 62 original members during their 3 generations. As of July 2016, Nogizaka46 has 35 members and 12 Kenkyuusei.