Odd Eye Circle (Korean: 오드 아이 써클; RR: Odeu Ai Sseokeul; MR: Odŭ Ai Ssŏk'ŭl; commonly stylized in all caps, or abbreviated as OEC) is a South Korean girl group, consisting of three members: Kim Lip, JinSoul, and Choerry.

The trio originally formed as the second sub-unit of girl group Loona through their pre-debut project "Girl of the Month" and debuted on September 21, 2017, with the EP Mix & Match. In January 2023, the members of Odd Eye Circle won their lawsuits against Blockberry Creative and later signed with Modhaus in March. The trio resumed their activities with the release of their second EP Version Up on July 12, 2023.