Ojarumaru (おじゃる丸) is a Japanese anime series created by Rin Inumaru, produced by NHK Enterprises, and animated by Gallop. The series has aired on NHK E-Tele since October 1998, making it the second longest-running anime on NHK behind Nintama Rantaro, and the third longest-running anime series to date. The series focuses on a 5-year-old Heian-era prince named Ojarumaru Sakanoue who accidentally time-warps to modern Japan and has adventures there while dodging a trio of young oni who try to get back a scepter that he stole from Great King Enma. The series has been dubbed in many languages. It was the first NHK anime series to be animated using the digital ink-and-paint process instead of cels.

Gallop Co., Ltd , sometimes credited as Studio Gallop , is a Japanese animation studio founded on December 13, 1978, by former Mushi Pro members.