Kim Da-hyun (; born May 28, 1998), known mononymously as Dahyun, is a South Korean singer, rapper, and actress. She is a member of the South Korean girl group Twice, formed by JYP Entertainment in 2015.
Dahyun made her acting debut in 2025, appearing in films You Are the Apple of My Eye and Run to You and the television series Love Me.
In November 2018, Dahyun was criticized by right-wing Japanese lawmaker Masaru Onodera for wearing a T-shirt made by Marymond, an organization that raises funds to help comfort women who were victims of sexual slavery by the Imperial Japanese Army during World War II. In the aftermath, The Korea Times criticized J. Y. Park, founder of JYP Entertainment, for failing to speak up in her defense.
Since Feel Special (2019), she has consistently contributed to Twice's music as a lyricist, becoming one of the group's most prolific songwriters. In 2023, she appeared as the female lead in Young K's music video for "Nothing But".
On May 4, 2024, it was announced that Dahyun would be making her acting debut in the independent film Run to You. She was also cast in You Are the Apple of My Eye, a Korean remake of the 2011 Taiwanese film of the same name. The film premiered at the 29th Busan International Film Festival in October 2024. In it, she played a studious but quietly rebellious top student. Her portrayal—balancing innocence, humour, and coming-of-age complexity was widely praised as a breakout moment, with critics stating that it solidified her transition from idol to respected screen talent. After much acclaim for her work in the film she received the Rising Star Award at the Busan International Film Festival, the Best New Actress award at the Seoul Global Movie Awards, and the New Star Award at the 29th Chunsa Film Art Awards.
In 2025, Dahyun was cast in Love Me, a Korean remake of Swedish television series Älska mig (2019–2020). Her performance in the series garnered praise from both critics and audiences, with media outlets pointing to her rapid growth just one year after her acting debut and stating that she had further established her presence as an actress. That year, her first solo track "Chess" was featured on Twice's tenth anniversary album .
| + List of soundtrack appearances, showing year released, and name of the album ! scope="col" rowspan="2" | Title ! scope="col" rowspan="2" | Year ! scope="col" | Peak chart positions ! scope="col" rowspan="2" | Album |
| + List of other charted songs, showing year released, selected chart positions and name of the album ! scope="col" rowspan="2" | Title ! scope="col" rowspan="2" | Year ! scope="col" colspan="1" | Peak chart positions ! scope="col" rowspan="2" | Album |
| + List of songs, showing year released, artist name, and name of the album ! scope="col" | Title ! scope="col" | Year ! scope="col" | Artist ! scope="col" | Album ! scope="col" | Notes ! scope="col" | Ref |
| Run to You | Ji-eun |
| Real Man | Cast member | Female edition 4 | |
| Idol Star Athletics Championships | Host |
| + Name of the award ceremony, year presented, category, work nominated, and award result ! scope="col" | Award ceremony ! scope="col" | Year ! scope="col" | Category ! scope="col" | Work ! scope="col" | Result ! scope="col" class="unsortable" | |
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