Pierrot Co., Ltd. (株式会社ぴえろ, Kabushiki-gaisha Piero), previously known as Studio Pierrot Co., Ltd.[h] until 2002, is a Japanese animation studio established in May 1979 by Yuji Nunokawa, previously an animator and director for Tatsunoko Production.

[3] Pierrot is renowned for several worldwide popular anime series, such as Naruto, Bleach, Tokyo Ghoul, Tokyo Underground, Yu Yu Hakusho, Black Clover, Boruto: Naruto Next Generations, Ghost Stories, Great Teacher Onizuka, and Gensomaden Saiyuki.

Nunokawa was the studio's first president and CEO, a position which he held until 2012.

That year, Nunokawa retired and was elected as chairman of the board; and Michiyuki Honma, the senior managing director, succeeded him as president.

Pierrot's director of sales, Kazumichi Ueda, succeeded Honma as CEO and president.