Lee Ji Woo (tripleS)

Who is Lee Ji Woo (Jiwoo tripleS)?

Lee Ji Woo is a South Korean singer and actress under MODHAUS, performing as a member of the girl group tripleS with the designated S Number S3. Born on October 24, 2005, she stands at a height of 172 cm. As a member of tripleS, Jiwoo participates in multiple sub-units including +(KR)ystal Eyes, EVOLution, Aria, Hatchi, and Zenith.

Jiwoo gained recognition through her participation in survival competition shows. She initially appeared as a contestant on MBC's My Teenage Girl in 2021, where she was eliminated in episode 11. In 2023, she competed on Mnet's Queendom Puzzle, finishing with a final ranking of 13th place. Her entertainment career began with acting, debuting in the web-series I:LOVE:DM in 2021.

Jiwoo attended Apgujeong High School and currently studies in the Theater Department at Dongguk University. Her path to K-pop was unconventional, as she previously played competitive ice hockey as a junior player before transitioning to idol training. She trained at multiple major South Korean entertainment companies, including SM Entertainment, YG Entertainment, JYP Entertainment, and FNC Entertainment. Jiwoo was officially revealed as the third member of tripleS on June 1, 2022.

Lee Ji Woo's Early Life and Background

Birth and Family

Born in Jamwon-dong, Seocho District, Seoul, South Korea, on October 24, 2005, Lee Ji Woo grew up in an affluent area of the capital. Her family consists of her parents and a younger brother born in 2007.

Education

Jiwoo attended Seoul Shindong Elementary School and continued to Shindong Middle School before graduating from Apgujeong High School in 2024. During her elementary school years, she consistently held class president positions. She later served as president of the musical club during high school. Following graduation, Lee enrolled at Dongguk University in the Department of Theatre.

Ice Hockey to K-pop

Jiwoo competed as a junior ice hockey player with professional aspirations during childhood. Her parents expressed concern about potential injuries from the sport, prompting her career path change. In sixth grade, around 2016, she received street casting at a Daiso store, which initiated her transition from athletics to entertainment training.

Training at Multiple Entertainment Companies

SM Entertainment street cast Jiwoo and she became an idol trainee before transferring to YG Entertainment. She subsequently moved to JYP Entertainment as an acting trainee. Her training period also included time at FNC Entertainment. Jiwoo departed from these companies due to difficulties with the constant observation and evaluation inherent in trainee life.

Lee Ji Woo's Career in tripleS

My Teenage Girl Appearance

Jiwoo initially served as the teaser model for MBC's survival show My Teenage Girl. Subsequently, she joined the competition as a contestant and was officially revealed on September 14, 2021. During the show, mentor Kwon Yu-ri described Jiwoo as an all-rounder member capable of making the team shine on stage while displaying her own abilities. Jiwoo progressed through multiple elimination rounds until episode 11, where she was eliminated on February 20, 2022, finishing in 18th place.

Joining MODHAUS and tripleS Debut

Following her run on My Teenage Girl, Jiwoo joined MODHAUS, presumably in March 2022. She was officially revealed as the third member of tripleS, designated S3, on June 1, 2022. Jiwoo moved into HAUS on June 7, 2022, becoming the first resident of the Mint room. On February 13, 2023, Jiwoo debuted with tripleS through the extended play Assemble and its title track "Rising".

Queendom Puzzle Participation

Jiwoo was announced as a contestant on Mnet's survival show Queendom Puzzle on May 18, 2023. Between June and August 2023, she competed in the reality competition. Jiwoo reached the finale but was eliminated during the final episode on August 15, 2023, finishing in 13th place.

Lee Ji Woo's Sub-units and Discography

+(KR)ystal Eyes

Jiwoo became a member of +(KR)ystal Eyes, the second sub-unit of tripleS, through fan voting on September 26, 2022. The quartet, comprising Yoon Seoyeon, Kim Chaeyeon, Jiwoo, and Kim Soomin, debuted on May 4, 2023, with the extended play Aesthetic. The album featured six tracks, led by the title single "Cherry Talk".

EVOLution

Jiwoo was determined as a member of EVOLution on April 25, 2023. The eight-member sub-unit debuted on October 11, 2023, with the mini album MUJUK and title track "Invincible". The album sold 14,023 copies on its first day.

Aria

Through the Ballad Dimension Grand Gravity, Jiwoo was selected for Aria on November 24, 2023. This five-member ballad sub-unit debuted on January 15, 2024, with the single album Structure of Sadness featuring the title track "Door".

Hatchi

Jiwoo joined Hatchi, tripleS's Japanese sub-unit, on August 28, 2024. The eight-member group debuted on November 20, 2024, with the single album Untitled.

zenith

Jiwoo was determined as a member of zenith on September 6, 2025. The six-member sub-unit debuted on November 24, 2025, with the single "Q&A" from the mini album Beyond Beauty.

Lee Ji Woo's Acting Career and Other Activities

Web Drama Appearances

Jiwoo made her official acting debut on May 12, 2021, in the web-series I:LOVE:DM as the leading character. The drama consisted of seven episodes. Subsequently, she returned to acting in September 2024 with the web drama What Summer Likes! (also titled What I Love About Summer), portraying the supporting character Woo-seul. The series aired from September 20 to October 25, 2024.

Variety Show Participation

Before competing on My Teenage Girl, Jiwoo appeared as a trainee on the pre-show Hesitation Before Going to School on MBC. She participated in Strong Girl: Badge War on the 1theK Originals YouTube channel from June 13 to August 15, 2023. Jiwoo continued her involvement in subsequent seasons, appearing in Badge War 2 Complete Edition: Girls Never Die in 2024 and Badge War 3: No Badge, No Power in 2025.

Radio Hosting

Jiwoo served as a special DJ on MBC Radio's Idol Radio from September 2 to September 11, 2024.

Personal interests and hobbies

Jiwoo demonstrates proficiency in baking, particularly excelling at scones and meringue cookies. She developed this interest during elementary school when meringue cookies became trendy. In February 2025, she baked chocolate muffins for all 24 tripleS members on Valentine's Day. Jiwoo identifies iced tea as her favorite beverage and acknowledges an addiction to it.

FAQs

When was Lee Ji Woo born? Lee Ji Woo was born on October 24, 2005, making her 20 years old as of 2026.

What is Lee Ji Woo's height? Lee stands at 172 cm tall.

What was Lee Ji Woo's sport before becoming a K-pop idol? Lee competed as a junior ice hockey player with professional aspirations during childhood before transitioning to entertainment training.

Which tripleS sub-units does Lee Ji Woo belong to? Lee participates in five sub-units: +(KR)ystal Eyes, EVOLution, Aria, Hatchi, and zenith.

What entertainment companies did Lee Ji Woo train at? Lee trained at SM Entertainment, YG Entertainment, JYP Entertainment, and FNC Entertainment before joining MODHAUS.

What is Lee Ji Woo's most popular song? "PainDrop" represents the most popular song by JIWOO (tripleS) with a total of 1.2K page views.

When did Lee Ji Woo debut with tripleS? Lee debuted with tripleS on February 13, 2023, through the extended play Assemble and its title track "Rising".

What is Lee Ji Woo's university major? Lee studies in the Theatre Department at Dongguk University.