There are currently 2 known acts of the same name:
1: Collar (commonly stylised as COLLAR) is a Hong Kong Cantopop girl group formed from Hong Kong broadcaster ViuTV's reality talent show King Maker IV in 2021. The group consists of eight members: Sumling Li (Sumling), Garie Shum (Gao), Natalie So (So Ching), Winka Chan (Winka), Ivy So (Ivy), Day Hui (Day), Marife Yau (Marf), and Candy Wong (Candy). They debuted on 12 January 2022, with the first single "Call My Name!".

2: COLLAR is a Brisbane-based electronic duo that started gaining popularity on Triple J and their Unearthed website in 2020-21. Their only 2 current EPs are "Strangest Desires", released on October 2, 2020, and "HARD TIME TO TAKE IT", released on August 27, 2021. Read more on Last.fm. User-contributed text is available under the Creative Commons By-SA License; additional terms may apply.