JIA (Park Ji-a), born August 22, 2008, is a Korean–American member of TUIDE. She debuted under ABD on August 24, 2026 with the five-track EP TUNE & PLAY and the lead song SUN KISS. Her multicultural background is part of the group’s international identity, although her contribution is most directly expressed through the group’s songs and stage performances.

In an August 2026 Teen Vogue interview, JIA described the sense of comfort she feels among the seven members. The magazine reported that her pre-debut training time was shorter than that of some teammates, while SEOYEON praised her brightness onstage and determination behind the scenes. JIA also spoke about the team’s goal of reaching a wider international audience and its hope of earning recognition as a new act.

During the debut showcase, JIA explained the group’s “soultronic” sound as combining lively energy with a relaxed feel across several different song genres. Her comments helped define how TUIDE wanted listeners to experience the album, rather than confining the team to a single style.

JIA participated in the August 7 pre-debut GRLS performance and in subsequent SUN KISS promotions. No independently released solo album or single is confirmed in the materials reviewed.