Oh Yeon-seo

In 2019, Oh was cast in the romantic comedy drama Love with Flaws.

In October 2019, Oh signed with new agency SidusHQ.

In 2018, Oh starred in the film adaptation of the Cheese in the Trap alongside Park Hae-jin, who also played the role of Yoo Jung in the drama.

On March 29, 2018, it was confirmed that Oh is in a relationship with actor Kim Bum. However, after a few months of dating they were reported to have parted ways.

In 2017, Oh starred in the historical drama remake of the 2001 box office hit My Sassy Girl alongside Joo Won. In August 2017, Oh signed with new management agency Celltrion Entertainment. The same year, she was cast in tvN's fantasy romantic comedy drama A Korean Odyssey, written by the Hong sisters.

Oh then starred alongside Rain in the SBS drama Please Come Back, Mister, which aired from February to April, 2016. She played Han Hong-nan, a male character reincarnated in a female's body. Oh was praised for her chemistry with co-star Lee Ha-nui, whom she has acted with in her previous project Shine or Go Crazy. She also impressed viewers through her comedic portrayal of her masculine role. The same year, she starred in Take Off 2, the sequel to the 2009 movie Take Off where she plays a member of the first South Korean woman's national ice hockey team.

In 2015, Oh played Shin Yool, the last princess of Balhae, in the historical drama Shine or Go Crazy, co-starring Jang Hyuk. The series was a modest hit, and topped ratings in its timeslot throughout its run.

Oh played the lead role of Jang Bo-ri, a compassionate and selfless person, in the highly acclaimed series Jang Bo-ri is Here! (2014). The drama's ratings peaked at 40.4%, and led to a surge in popularity for Oh. She had a hard time playing the character as she grew up in Gyeongsang-do but her character had to speak the Jeolla-do dialect, which she had never used in her entire life.

In 2013, Oh played a thoracic resident surgeon in medical drama Medical Top Team. She was appointed an ambassador for the first annual Animal Film Festival in Suncheon along with Kim Min-joon and Gal So-won to help raise awareness for animal rights and welfare in August. Oh was also appointed a Red Cross Ambassador together with actor Ryu Soo-young.

Though she had a major role in the 2009 film A Blood Pledge, it wasn't until she was cast in the family drama My Husband Got a Family (2012) that she gained minor attention. She then joined the popular variety program We Got Married alongside MBLAQ's Lee Joon. Towards the end of 2012, Oh was cast in daily drama Here Comes Mr. Oh where she had her first lead role.

Oh Yeon-seo made her entertainment debut in 2002 when she was 15-years-old under her birth name Oh Haet-nim, with the band LUV. They released their first album, Story, with the singles "Orange Girl" and "I Still Believe in You". The band was short-lived and disbanded six months later due to their low popularity. Oh then shifted to acting and made her debut appearance in the 2003 drama Sharp, but remained unknown for a long period of time.

Oh Yeon-seo (born Oh Haet-nim, (1987-06-22 ) June 22, 1987), is a South Korean actress and former member of South Korean girl group, LUV. She is best known for her roles in television dramas My Husband Got a Family (2012), Jang Bo-ri is Here! (2014), Shine or Go Crazy (2015), Come Back Mister (2016), My Sassy Girl (2017), and A Korean Odyssey (2017–2018)