Double S 301 is a South Korean boy band formed in 2008 by DSP Media under the name SS301. The group consists of members Kim Hyung-Jun, Heo Young-Saeng, and Kim Kyu-Jong. They are known for their catchy pop and R&B songs as well as their impressive stage performances.

SS301 gained significant popularity with hits like "Love Like This" and "U R Man." In 2015, the group signed contracts with CI Entertainment and rebranded themselves as Double S 301. The members have also pursued solo careers and have found success both as singers and actors.

Double S 301 has a loyal fanbase, affectionately known as "Triple S". Over the years, the group has released several albums and is known for their harmonious vocal arrangements and captivating choreography.