Lee Ji-yeon (; born February 18, 1984), known professionally as Lina (), is a South Korean singer and musical theatre actress. She was a part of the short-lived Korean R&B duo Isak N Jiyeon during 2002. After the duo disbanded in 2004, Lina eventually became a member of girl group The Grace in 2005.
Following The Grace's indefinite hiatus in 2010, Lina established herself as a musical actress, notably through her participation in the original and Korean versions of stage musicals including Fame, Moon Embracing the Sun, Jekyll & Hyde, Notre-Dame de Paris, ' and Les Misérables.
On July 25, 2014, Lina confirmed that she was dating musical actor, Jang Seung-jo for two years. They had been seeing each other since the musical "Temptation of Wolves". They got married on November 22, 2014, in a private wedding. The two welcomed their first child in September 2018. On September 28, 2021, the agency announced that Lina is pregnant with her second child. On December 31, 2021, Lina gave birth to the couple's second child, a daughter.