1. Choi Si-won, known mononymously as Siwon, is a South Korean singer, songwriter, model, and actor, known for his work as a member of South Korean boy group Super Junior.

1. Choi Si-won, known mononymously as Siwon, is a South Korean singer, songwriter, model, and actor, known for his work as a member of South Korean boy group Super Junior.
Choi Si-won has participated in various Chinese language films such as Helios, To the Fore, and Dragon Blade.
Choi Si-won was born in Seoul, South Korea, on April 7,1986.
Choi Si-won's father was the former CEO of Boryung Medicine, a pharmaceutical company.
Choi Si-won was scouted by a talent agent from SM Entertainment when he was 16 as he was waiting for friends in front of his high school.
Choi Si-won auditioned without his parents' approval; his parents were notified only after he passed the auditions.
Choi Si-won later moved into dormitories with fellow trainees and was trained in areas of singing, acting, dancing as well as languages.
Choi Si-won was featured in a music video of The Grace's Dana whilst he was being trained as a solo singer in 2003.
Choi Si-won debuted as part of 12-member rotational project group Super Junior 05 on November 6,2005, on SBS' music program Popular Songs, performing their first single, "Twins ".
In 2006, Choi Si-won was cast in the Hong Kong epic film A Battle of Wits, playing the role of the Liang Prince.
Choi Si-won received praise from co-star Andy Lau, who stated that Choi Si-won sets a good example for Hong Kong actors.
In 2007, Choi Si-won starred in Attack on the Pin-Up Boys along with other Super Junior members.
Choi Si-won plays a data analyst and rookie elite agent.
In 2012, Choi Si-won starred in SBS' comedy satire drama The King of Dramas, based around Korean television production.
Choi Si-won plays Kang Hyun-min, a top celebrity with a prickly personality.
Choi Si-won co-starred in Hong Kong historical-action film Dragon Blade with Jackie Chan, crime thriller Helios and sports drama To the Fore alongside Eddie Peng and Shawn Dou.
Choi Si-won starred in the Chinese romance drama Fall In Love With You Again and was cast in Billion Dollar Heir, a Chinese adaptation of the 2013 hit drama The Heirs.
Back in Korea, Choi Si-won starred as the second male lead in MBC's romantic comedy She Was Pretty.
Choi Si-won received critical acclaim for his acting performance and comedic portrayal of the character, and experienced a rise in popularity.
Choi Si-won released a single for the drama titled "Only You", which ranked atop the music charts.
In October 2017, Choi Si-won starred in the tvN's youth romance drama Revolutionary Love alongside Kang So-ra.
In 2021, Choi Si-won starred in the TVING web series Work Later, Drink Now and made a cameo appearance in the movie New Year Blues.
In 2022, Choi Si-won starred in the ENA romantic comedy series Love Is for Suckers and returned for the second season of Work Later, Drink Now.
In 2023, Choi Si-won played a supporting role in the Netflix original series Bloodhounds, and made a cameo in the TVING original series Death's Game.
In 2015, Choi Si-won was chosen by the Swiss luxury watchmaker brand Piaget as their youngest Asian model.
Choi Si-won was appointed as the special representative of the South Korea committee for UNICEF on November 12,2015.
In 2023, Choi Si-won was named the PR Ambassador of the 14th Gwangju Biennale.
Choi Si-won graduated from Apgu Jeong High School in February 2006 and from Inha University in February 2012 alongside fellow member Kim Ryeowook.
Choi Si-won is a devout Protestant Christian, and has said he would like to become a missionary.
Choi Si-won has collaborated with the Christian singing group 3rd Wave Music along with other K-pop artists.
Choi Si-won enlisted as a conscripted policeman on November 19,2015.
Choi Si-won was discharged from mandatory military service on August 18,2017.