Nam Da Won (남다원) is the Main Vocalist of the Girl Group Cosmic Girls under Starship Entertainment. Aside from singing, Dawon can also play the piano and guitar.
She was revealed as a member of WJSN on December 31, 2015 as part of the group's Natural Unit. The group officially debuted on February 25, 2016 with their first mini album Would You Like?.
In 2020, Dawon was cast as a lead in the musical movie K-School. The release of the film was originally scheduled for December of 2020, but currently there is no confirmation as to when the release will be rescheduled due to controversy involving a cast member.
On December 12, 2019, Starship Entertainment released a statement stating that after receiving a detailed examination and treatment at the hospital, Dawon was diagnosed with an anxiety disorder. As a result, it was announced that she will be going on a hiatus to focus on treatment and recovery.
On February 22, 2022, Starship Entertainment announced that after discussing with Dawon and hearing the opinions of specialized medical institutions, it was agreed that she should focus on treatment for her anxiety and will be taking a break from group activities to focus on her health. Because of this, Dawon was unable to participate with her groupmates in Queendom 2.
On March 3, 2023, she, alongside Luda, would have their contracts ultimately terminated with Starship Entertainment following its expiration.