Kim Jun Tae, also known as JT, is a South Korean singer, dancer, former member of TREI and current member of the duo JT & MARCUS and IN A MINUTE. Before debuting, he worked as a guide vocalist, recording guide tracks for BTOB. He later spent around 4 years as a trainee.

TREI was originally formed as a duo in 2017 with Lee Jae Jun and Chae Chang Hyun. However, Banana Culture Entertainment decided to restructure the group and added him as a third member in 2018. He officially debuted in February 2019 as the group's main vocalist with their mini-album, "Born". Unfortunately, they were not successful and ended up disbanding in June 2020.

In October 2021, he joined MLD Entertainment and re-debuted, now as part of the duo JT & MARCUS (as JT and alongside former TREI member Lee Jae Jun or Marcus) with their first single, "Dear You". They occasionally release a new single and have provided OSTs for several dramas.

He then re-debuted in October 2024 as part of the trio IN A MINUTE with Kim Hyun Yeop and Lee Jae Jun. They had a fan meeting in Seoul and pre-released the singles "Unbox" and "What You Want".