Oizumi Onei Co., Ltd. (有限会社大泉音映 Yūgen gaisha Ōizumi Onei) is a Japanese sound post-production company which was founded by Sakuji Abe in 1981. They are responsible for their contributions on Toei's Super Sentai series.
Sakuji Abe, who was a sound engineer in the recording department of Toei Oizumi Studio, became independent and started as a post-production company that reports directly to Toei TV Production. Initially, Abe was the only member, but Yoshihiko Ohno joined in 1987. Hiromi Ogawa then joined the company in 2011 sometime after Abe's death.