Recommended for mature audiences; M-rated content may only be broadcast between 8:30 p.m. and 5:00 a.m. on any day, and additionally between 12:00 p.m. and 3:00 p.m. on schooldays.

Not recommended for persons under 18. Allowed between midnight and 5 a.m. and only in some channels, access to these programs is locked by a personal password.

This rating is for programs that contain material that may be inappropriate for children under 15, and that parental discretion should be used. Examples include most dramas, and talk shows on OTA (over-the-air) TV (KBS, MBC, SBS), and many American TV shows/dramas on Cable TV channels like OCN and OnStyle. The programs that have this rating may include moderate or strong adult themes, language, sexual inference, and violence. As with the TV-MA rating in North America, this rating is commonly applied to live events where the occurrence of inappropriate dialogue is unpredictable. Since 2007, this rating is the most used rating for TV.

Not recommended for children under 16. Not allowed air before 10:30 p.m. Some channels and programs are subject to exception.