List of M Countdown Chart winners (2012)

The M Countdown Chart is a record chart on the South Korean Mnet television music program M Countdown. Every week, the show awards the best-performing single on the chart in the country during its live broadcast.

In 2012, 28 singles ranked number one on the chart and 26 music acts were awarded first-place trophies. Nine songs collected trophies for three weeks and achieved a triple crown: "Twinkle" by Girls' Generation-TTS, "The Chaser" by Infinite, "Electric Shock" by f(x), "Sexy, Free & Single" by Super Junior, "Beautiful Night" by Beast, "Gangnam Style" by Psy, "Crayon" by G-Dragon, "1,2,3,4" by Lee Hi, and "Return" by Lee Seung-gi. No release for the year earned a perfect score, but "Twinkle" by Girls' Generation-TTS acquired the highest point total on the May 10 broadcast with a score of 9,357.