Oh Seung-ah

In this Korean name, the family name is Oh.

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.^[1] She is best known for her role in The Second Husband (2021–2022), which gained her the title of "Serial Villain".^[2]

Oh Seung-ah
Oh in May 2015
Born	(1988-09-13) September 13, 1988 (age 36) Seoul, South Korea
Education	Sejong University – Department of Film Arts
Occupations	Actress singer
Years active	2009–present
Agent	Starhue Entertainment
Musical career
Genres	K-pop
Instrument	Vocals
Years active	2009–2016
Labels	DSP Media
Formerly of	Rainbow
Korean name
Hangul	오승아
Revised Romanization	O Seung-a
McCune–Reischauer	O Sŭng-a

Life and career

1988–2016: Early life and career beginnings

Main article: Rainbow (girl group)

Oh was born on September 13, 1988, in Seoul, South Korea. She has attended Changduk Girls' High School and Sangmyung University.^[3] 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.^[4]

After becoming a member of Rainbow, she also focused on acting. She was a member of the group until its disbandment in 2016.^[5]

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.^{[citation needed]} In 2018 she played a protagonist villain role in Secrets and Lies for which she won the Best Actress award.^[6] In 2019 she was the Ambassador of Happy Angel. She was praised for her acting by playing a villainess role in Bad Love.^[7]

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.^[8] In April 2021, Oh signed with Starhue Entertainment.^[9] 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.^[10]

Discography

For Oh's works with Rainbow (group), see Rainbow (group) § Discography.

Filmography

Film

Year	Title	Role	Notes	Ref.
2011	Heartbeat	Girl group member	Bit part	[11]

Television series

Year	Title	Role	Notes	Ref.
2010	Big Thing	Mina		[12]
2011–2014	The Clinic for Married Couples: Love and War	Soo-yeong	Cameo	[13]
2013	The Dramatic	Seung-ah		[14]
	Play Guide	Oh Seung-ah	Cameo	[15]
2014–2015	Pinocchio	MSC news reporter interviewer		[16]
2014	Jang Bo-ri Is Here!	Choi Yoo-ra		[17]
2016	88 Street	Somi		[18]
2017	KBS TV Novel: "A Sea of Her Own"	Yoon Soo-in		[19]
2018	Grand Prince	Kim Hyo-bin		[20]
2018–2019	Secrets and Lies	Shin Hwa-gyon		[21]
2019	Drama Stage: "My Wife's Bed"	Lee Yi-na		[22][23]
	Bad Love	Hang Yeon-soo		[24]
2021	A Good Supper	Department store VVIP customer	Cameo	[25]
	Love (ft. Marriage and Divorce)	Lee Yeon-hee	Cameo (Episode 1)	[26]
2021–2022	The Second Husband	Yoon Jae-gyeong		[8]
2022	Young Lady and Gentleman	Ahn Ji-min	Cameo (Episode 49–50)	[27]
	Vengeance of the Bride	Kang Ba-da		[10]
2023–2024	The Third Marriage	Jung Da-jung		[28]
2025	Motel California	Secretary Oh		[29]

Web series

Year	Title	Role	Ref.
TBA	Shine, My Life	Bitna	[30]

Television shows

Year	Title	Role	Notes	Ref.
2012	The Romantic and Idol	Regular member	Season 1	[31]
2020	King of Mask Singer	Contestant		[32]
2022	Romantic Doctor Im Chae-moo	Cast Member		[33]
	Real Barracks Talk	Host		[34]

Ambassadorship

• Public Relations Ambassador for 'The Miracle of 119 Won (2021)^[35]

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	Ref.
Broadcast Actors Awards	2022	10 People Who Shined Korea	The Second Husband	Won	[36]
KBS Drama Awards	2017	Excellence Award, Actress in a Daily Drama	A Sea of Her Own	Nominated	[37]
MBC Drama Awards	2018	Best New Actress	Secrets and Lies	Won	[6]
	2024	Top Excellence Award, Actress in a Daily/Short Drama	The Third Marriage	Won	[38]