In 2015, she headlined the mystery thriller The Silenced, set in a girls' boarding school during the Japanese occupation.
This was followed by dual roles in romantic comedy Oh My Ghost, Park's first television series in seven years.
Her salary of ₩30 million (US$27,000) per episode made her the highest-paid actress to appear on cable channel tvN. The series was a commercial and critical hit, and garnered the Best Actress award for Park at the 4th APAN Star Awards.
She was also dubbed as the "romantic comedy queen" by the Korean press.

Park next played the selfish love interest of a mutant in the black comedy Collective Invention, and an entertainment news cub reporter in the workplace comedy You Call It Passion.

In June 2016, Park was cast as the title role in JTBC's series Strong Girl Bong-soon, premiered in February 2017, where she played a character with superhuman strength.
The series became one of the highest rated Korean dramas in cable television history.
Due to its popularity, it earned her Korea Reputation Center's highest brand value among Korean TV actors and the highest consumer participation rate in February and March 2017.

In September 2017, Park began filming the romance film On Your Wedding Day which premiered in August 2018.
She was reunited with Kim Young-kwang, whom she previously acted with in the 2014 film Hot Young Bloods.
The film was a box office hit and received positive reviews.

In August 2018, Park was cast in tvN's series Abyss, where she plays a beautiful prosecutor who transforms into a plain-looking girl after being revived by a mysterious orb.
It premiered in May 2019.

In December 2019, Park parted ways with her ten-year agency Fides Spatium.
Two months later, she signed an exclusive contract with BH Entertainment.

In August 2020, it was announced that Park was casted alongside Lee Byung Hun and Park Seo Joon in the thriller film Concrete Utopia, which will begin filming in early 2021.
In 2015, she headlined the mystery thriller The Silenced, set in a girls' boarding school during the Japanese occupation. This was followed by dual roles in romantic comedy Oh My Ghost, Park's first television series in seven years. Her salary of ₩30 million (US$27,000) per episode made her the highest-paid actress to appear on cable channel tvN. The series was a commercial and critical hit, and garnered the Best Actress award for Park at the 4th APAN Star Awards. She was also dubbed as the "romantic comedy queen" by the Korean press.
Park next played the selfish love interest of a mutant in the black comedy Collective Invention, and an entertainment news cub reporter in the workplace comedy You Call It Passion. 
In June 2016, Park was cast as the title role in JTBC's series Strong Girl Bong-soon, premiered in February 2017, where she played a character with superhuman strength. The series became one of the highest rated Korean dramas in cable television history. Due to its popularity, it earned her Korea Reputation Center's highest brand value among Korean TV actors and the highest consumer participation rate in February and March 2017.
In September 2017, Park began filming the romance film On Your Wedding Day which premiered in August 2018. She was reunited with Kim Young-kwang, whom she previously acted with in the 2014 film Hot Young Bloods. The film was a box office hit and received positive reviews.
In August 2018, Park was cast in tvN's series Abyss, where she plays a beautiful prosecutor who transforms into a plain-looking girl after being revived by a mysterious orb. It premiered in May 2019.
In December 2019, Park parted ways with her ten-year agency Fides Spatium. Two months later, she signed an exclusive contract with BH Entertainment.
In August 2020, it was announced that Park was casted alongside Lee Byung Hun and Park Seo Joon in the thriller film Concrete Utopia, which will begin filming in early 2021.
Park Bo-young