Lee Na-eun (; born May 5, 1999), also known mononymously as Naeun, is a South Korean actress, model and singer. She is a former member of the South Korean girl group April, formed by DSP Media in 2015. She is best known for her roles in television series A-Teen (2018), A-Teen 2 (2019) and Extraordinary You (2019).
On February 1, 2018, Lee alongside April bandmate Lee Jin-sol collaborated in their digital single track "My Story" which was released on February 7. On May 2, 2018, Lee alongside bandmate Lee Jin-sol released their 2nd collaboration track "Stars In The Night Sky" for SBS TV television series Switch. The same year, Lee was cast in the teen drama A-Teen (2018) and the second season of the series in 2019. Lee also starred in MBC's school fantasy drama Extraordinary You, based on the hit Daum webtoon July Found by Chance. From October 2019 to February 2021, she hosted Inkigayo alongside Jaehyun of NCT and Minhyuk of Monsta X.
On March 1, 2020, Lee and bandmate Lee Jin-sol released their 3rd collaboration song "Matter of Time" as part of seventh extended play Da Capo. On June 19, Lee was featured in Ravi's Paradise EP with the title track "Rain Drop". On November 8, Lee and Eric Nam released the duet "Attraction" as part of the soundtrack for Daum's webtoon Bunny & The Boys. Twelve days later, Lee was confirmed to star in Taxi Driver. However on March 8, 2021, Lee officially left the cast following Lee Hyun-joo's bullying accusations made against her.
On November 16, 2023, Lee made her special appearance in Flex X Cop, played a role as a celebrity. On January 31, 2024, Lee returns full-fledged acting in the action thriller series The Defects. On February 22, Lee also made a special appearance as a victim in the crime investigation drama Crash. On April 25, 2025, Lee signed a contract with HIAN for activities in Japan and became selected as a exclusive model for Kobunsha's JJ magazine to commemorate its 50th anniversary. On September 22, Lee would be starring in a short-form drama My Little Chef.
| "—" denotes releases that did not chart or were not released in that region. |
| Extraordinary You | Yeo Joo-da | ||
| Crash | Kim Min-ju | Cameo (episode 4) | |
| I Have a Secret | Cameo | |
| My Dream Is Ryan | Student teacher | |
| School Meal Restaurant | Host | |
| 2020 SBS Gayo Daejeon |
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