# Oh Seung-ah

Oh Seung-ah (Korean: 오승아, born September 13, 1988), is a South Korean actress and singer. She is a former member of the girl group Rainbow. She is best known for her role in The Second Husband (2021–2022), which gained her the title of "Serial Villain".

## Life and career
### 1988–2016: Early life and career beginnings

Oh was born on September 13, 1988, in Seoul, South Korea. She has attended Changduk Girls' High School and Sangmyung University. Oh was given the choice to debut with Kara or Rainbow, but she chose Rainbow because she was friends with some of the members before debuting.
After becoming a member of Rainbow, she also focused on acting. She was a member of the group until its disbandment in 2016.

### 2017–present: Acting career

She then started acting and starred in A Sea of Her Own, for which she was nominated for Excellence Award, Actress in a Daily Drama in 2017. She also starred in Grand Prince as a supporting role, for which she was praised by fans. In 2018 she played a protagonist villain role in Secrets and Lies for which she won the Best Actress award. In 2019 she was the Ambassador of Happy Angel. She was praised for her acting by playing a villainess role in Bad Love.
In 2021, Oh starred in the melodrama series The Second Husband as the main villain of the series playing the role of Yoon Jae-kyeong. In April 2021, Oh signed with Starhue Entertainment. In 2022, Oh returned to the small screen again as Kang Ba-da, the ruthless chaebol of Le Blanc and the lead villain of Vengeance of the Bride.

## Filmography
### Film

| Year | Title | Role | Notes | Ref. |
| 2011 | Heartbeat | Girl group member | Bit part | |

### Television series

| Year | Title | Role | Notes |
| 2010 | Big Thing | Mina | |
| 2011–2014 | The Clinic for Married Couples: Love and War | Soo-yeong | Cameo |
| 2013 | The Dramatic | Seung-ah | |
| 2013 | Play Guide | Oh Seung-ah | Cameo |
| 2014–2015 | Pinocchio | MSC news reporter interviewer | Cameo |
| 2014 | Jang Bo-ri Is Here! | Choi Yoo-ra | Cameo |
| 2016 | 88 Street | Somi | |
| 2017 | KBS TV Novel: "A Sea of Her Own" | Yoon Soo-in | |
| 2018 | Grand Prince | Kim Hyo-bin | |
| 2018–2019 | Secrets and Lies | Shin Hwa-gyon | |
| 2019 | Drama Stage: "My Wife's Bed" | Lee Yi-na | |
| 2019 | Bad Love | Hang Yeon-soo | |
| 2021 | A Good Supper | Department store VVIP customer | Cameo |
| 2021 | Love (ft. Marriage and Divorce) | Lee Yeon-hee | Cameo (Episode 1) |
| 2021–2022 | The Second Husband | Yoon Jae-gyeong | |
| 2022 | Young Lady and Gentleman | Ahn Ji-min | Cameo (Episode 49–50) |
| 2022 | Vengeance of the Bride | Kang Ba-da | |
| 2023–2024 | The Third Marriage | Jung Da-jung | |
| 2025 | Motel California | Secretary Oh | |

### Web series

| Year | Title | Role | Ref. |
| TBA | Shine, My Life | Bitna | |

### Television shows

| Year | Title | Role | Notes |
| 2012 | The Romantic and Idol | Regular member | Season 1 |
| 2020 | King of Mask Singer | Contestant | |
| 2022 | Romantic Doctor Im Chae-moo | Cast Member | |
| 2022 | Real Barracks Talk | Host | |

## Ambassadorship

* Public Relations Ambassador for 'The Miracle of 119 Won (2021)

## Awards and nominations

Name of the award ceremony, year presented, category, nominee of the award, and the result of the nomination :
| Award ceremony | Year | Category | Nominee / Work | Result |
| Broadcast Actors Awards | 2022 | 10 People Who Shined Korea | The Second Husband | Won |
| KBS Drama Awards | 2017 | Excellence Award, Actress in a Daily Drama | A Sea of Her Own | Nominated |
| MBC Drama Awards | 2018 | Best New Actress | Secrets and Lies | Won |
| MBC Drama Awards | 2024 | Top Excellence Award, Actress in a Daily/Short Drama | The Third Marriage | Won |