Lee Jae-jin

Lee Jae-jin is a South Korean musician and actor best known as the bassist and second vocalist for the rock band F.T. Island. Born in Cheongju in 1991, he has been a core member of the group since their debut in 2007. Beyond his instrumental skills, Lee contributes significantly to the band's songwriting and composition.

His career extends beyond music into acting, with notable roles in television dramas such as Unstoppable Marriage and My Only Love Song. He maintains a reputation among fans for his humility and dedication to his craft, balancing his duties as a band member with solo activities and variety show appearances. [edit]

Lee Jae-jin was born on December 17, 1991, in Cheongju, North Chungcheong Province, South Korea. From a young age, he displayed a strong interest in music, particularly focusing on the bass guitar. His early years were spent honing his musical abilities in an environment that encouraged artistic expression. To pursue his passion professionally, he attended Seoul Performing Arts High School, where he received formal training in music and performance.

Before joining a major agency, Lee participated in various auditions and training programs designed to identify new talent. His skill on the bass and his vocal potential caught the attention of scouts from FNC Entertainment. This scouting process led to his selection as one of the original members of F.T. Island, setting the stage for his professional debut. The period leading up to the group's formation was defined by rigorous practice and preparation for the competitive entertainment industry. [edit]

F.T. Island officially debuted on April 18, 2007, with the single Flower Rock, marking the beginning of Lee Jae-jin's professional career. As the bassist and a secondary vocalist, he played a pivotal role in establishing the band's unique sound, which blended rock elements with pop sensibilities. His contributions extended to composing several tracks for the group, showcasing his versatility as a musician.

In 2007, the same year of the band's debut, Lee made his acting debut in the drama Unstoppable Marriage. He continued to act throughout the late 2000s and early 2010s, appearing in projects like My Only Love Song in 2014. In 2011, he formed the sub-unit FT.Triple alongside Hong Ki-bum and Choi Min-hwan, which allowed him to showcase his vocal range more prominently. The group released albums such as Cheerful Sensibility, A Walk, and Cross & Choice during this period, solidifying their place in the K-rock scene. Recent years have seen him maintaining an active presence with the band while exploring solo ventures and participating in variety shows. [edit]

Publicly, Lee Jae-jin is viewed as the "brainy and cutest boy-next-door" of the group. He is known for his humble demeanor and hardworking attitude, which has endeared him to both fans and industry peers. His stage presence is charismatic, characterized by a distinctive bass-playing style that anchors the band's sound. On social media, he shares glimpses of his daily life and musical insights, fostering a genuine connection with his followers. [edit]

iFANN has not yet collected fame data for this person outside of the current published rankings. He is not featured on the September 2026 iFAMOUS Rankings flagship list. While the global fandom for F.T. Island is large and dedicated, there is no specific official name documented for Lee Jae-jin's individual fanbase separate from the group's collective following. Fans frequently organize birthday celebrations and support campaigns for the band's music releases. The group's general fandom remains highly active in promoting their work through streaming and social media engagement. [edit]

Lee Jae-jin is often referred to by fans as "Goat," a nickname reflecting his revered status for his musical prowess within the group. He possesses a rare ability to play complex bass lines while singing simultaneously, a skill that has become a hallmark of F.T. Island's live performances. Fans often note his deep knowledge of music theory, which he occasionally shares during interviews or social media posts regarding his songwriting process. Despite the high-energy nature of his work, he is known to be a devoted fan of classic rock bands, a taste that heavily influences his own musical style and bass playing techniques. [edit]

Lee Jae-jin keeps his family life largely out of the public eye. Specific details about his parents or siblings are not widely documented in public records. He resides in South Korea and maintains a close bond with his immediate family, though he rarely discusses them in detail during interviews. His private nature allows him to focus on his career without excessive media intrusion into his personal relationships. [edit]

F.T. Island, FNC Entertainment, FT.Triple. [edit]

Lee Jae-jin has maintained a very private personal life throughout his career. There are no confirmed reports of marriages, engagements, or long-term romantic relationships publicly disclosed up to 2026. He is currently believed to be single. While he has been seen in friendly interactions with fellow entertainers, such as Go Ji-yong in July 2026, these sightings have sparked fan speculation but remain unconfirmed as romantic. He prefers to keep his dating life away from the spotlight. [edit]

The iFANN Editorial Team estimates Lee Jae-jin's net worth at approximately $1.2 million as of 2026. This figure reflects his earnings from over fifteen years of activity with F.T. Island, including album sales, digital streaming revenue, and concert tours. Additional income streams include salaries from his acting roles in television dramas and occasional endorsement deals. His financial growth has been steady, driven by the enduring popularity of the band in South Korea and abroad. The estimate accounts for his contributions as a songwriter and composer, which generate ongoing royalties. [edit]