Clamp (stylized as CLAMP) is an all-female Japanese manga artist group. It consists of leader Nanase Ohkawa and three artists whose roles shift for each series: Mokona, Tsubaki Nekoi, and Satsuki Igarashi.
Clamp was first formed in the mid-1980s as an eleven-member group creating dōjinshi (self-published fan works), and began creating original manga in 1987. By the time the group made its mainstream publishing debut with RG Veda in 1989, it was reduced to seven members; three more members left in 1993, leaving the four current members of the group.
Notable works by Clamp include X (1992), Magic Knight Rayearth (1993), Cardcaptor Sakura (1996), Clover (1997), and xxxHolic and Tsubasa: Reservoir Chronicle (both 2003).