Mizuki Diving Club (MDC) is a Japanese diving club featured in DIVE!!.
The MDC was founded by the president of the sports manufacturer Shinnosuke Mizuki six years before the start of the story in order to nurture future diving talent in Japan. However, when the president died of hepatitis in mid-January, the company saw the club as a burden and there were rumors that they plan to close it down.
At the start of story, the club consisted of 27 elementary school students, 7 middle school students, and one high school student.
- The club meets at the Tokyo Tatsumi Swimming Center, which is a real place.