Pre-debut activities Dahyun first gained attention in sixth grade after performing a church dance known as the "eagle dance", which was later uploaded to
YouTube. She later auditioned for
SM,
YG, and
JYP and was accepted by all three agencies. After being scouted at a dance festival, she chose to join JYP and trained there for over three years. In 2014, she appeared as the main female character in the music video for
Got7's "Stop Stop It". The following year, she competed in
Sixteen, a
reality television show that determined the lineup of JYP's new girl group. She finished among the nine selected contestants and debuted in
Twice as a singer and rapper. Its lead single "
Like Ooh-Ahh" later became the first K-pop debut song to reach 100 million views on
YouTube. In February 2016, she joined the cast of the variety show
Real Man, which followed celebrities experiencing military life. In 2017, Dahyun ranked seventeenth in
Gallup Korea's annual poll of the most popular idols in South Korea. In subsequent years, she appeared as a host on several South Korean music and variety television programs. Following the criticism,
The Korea Times criticized
J. Y. Park, founder of JYP Entertainment, for not publicly defending her. Beginning with
Feel Special (2019), Dahyun contributed lyrics to multiple Twice songs and became one of the group's most frequent lyricists. In 2023, she appeared as the female lead in the music video for "Nothing But" by
Young K of
Day6. On May 4, 2024, it was announced that Dahyun would make 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. The performance received positive critical attention, and she later 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. Reviews of the series noted her development as an actress following her film debut. That year, her solo track "Chess" was included in Twice's tenth anniversary album
Ten: The Story Goes On. On February 11, 2026, JYP announced that Dahyun had sustained an ankle fracture and would miss the remaining North American dates of the group's
This Is For World Tour. ==Artistry==