Super Junior-K.R.Y. is the first official sub-unit of South Korean boy band Super Junior, formed in 2006 with three main vocalists: Yesung, Ryeowook and Kyuhyun. K.R.Y. are the initials of the members' stage names.

Super Junior-K.R.Y. is regarded as the first sub-unit in a group in the K-pop scene, known for their smooth, silky ballads, providing soundtracks for various K-dramas such as “The One I Love,” “Stop Walking By,” and their Japanese single, “Promise You.”

In June 2020, the sub-unit released their first physical Korean album, “When We Were Us”.