What is the title given to a martial artist who has achieved the rank of 4th Dan and above?

The title given to a martial artist who has achieved the rank of 4th Dan and above is known as Grand Master. This designation is reserved for those who have reached a significant level of expertise and experience in their martial art, reflecting not only advanced technical skills but also a deep understanding of the philosophy, history, and teaching aspects of the discipline.

In many martial arts traditions, the title of Grand Master is often associated with individuals who not only demonstrate exceptional capability in their techniques and forms but also contribute to the development and promotion of the art, sometimes through teaching others or participating in martial arts organizations.

While Sa Bum Nim refers generally to an instructor or teacher, and Gwan Jang Nim is a title for a school leader or head instructor, neither of these titles necessarily corresponds to the higher ranking associated with Grand Master. Jung Soo Park, while a name, does not signify a title associated with rank within martial arts. Thus, Grand Master is the appropriate and recognized title for someone at the 4th Dan level and beyond.