2012–present: Leading roles
Park starred in another manga screen adaptation in 2012; in Dr. Jin, a neurosurgeon (played by Song Seung-heon) travels back in time to 1860. Park played dual roles as the protagonist's girlfriend in the present-day (a comatose doctor), and her doppelgänger in the Joseon era (a sheltered noblewoman).
In May 2013, Park Min Young ended her contract with the previous management company King Kong Entertainment and was a free agent for six months. In November 2013, Park signed with new management agency Culture Depot.
She next played an idealistic intern in the legal drama A New Leaf (2014), who clashes with her brilliant but cynical lawyer boss until he becomes an amnesiac (played by Kim Myung-min). This was followed by a role as a tabloid reporter in Healer, a series written by Song Ji-na that also starred Ji Chang-wook and Yoo Ji-tae. Healer was popular in China and resulted in increased recognition for Park.
Park next starred as a lawyer in the Korean drama Remember on SBS from late 2015 to early 2016, and played a Queen in the historical drama, Queen for Seven Days, which aired in 2017. In September 2017, It was confirmed that Park will be a fixed cast member in Netflix's variety show Busted!. In November 2017, it was reported that Park Min Young's contract with her agency Culture Depot expired. In December 2017, Park signed with new management agency Namoo Actors.
In 2018, Park was cast in her first romantic comedy drama What's Wrong with Secretary Kim alongside Park Seo-joon. The series was a ratings success, leading to increased popularity for Park. In October, Park held her first fan meeting since her debut 12 years ago titled My Day.
In 2019, Park starred in her second romantic comedy drama Her Private Life alongside Kim Jae-wook. Park played Seong Deok-mi who works as a curator at an art museum but spends her time outside of work as a passionate fangirl of idol groups.
In 2020, she starred in the JTBC romance drama When the Weather Is Fine alongside Seo Kang-joon.
On December 29, 2021, Namoo Actors announced that Park's contract had expired after she decided not to renew it. A day later, Hook Entertainment announced that Park has signed an exclusive contract.
In 2022, Park starred in the JTBC romance drama Forecasting Love and Weather alongside Song Kang, playing Jin Ha-kyung – a general forecaster at Korea Meteorological Administration.
In January 2024, Park appeared as the female lead in the fantasy revenge melodrama Marry My Husband alongside Na In-woo (as Yoo Ji-hyuk), where she portrayed Kang Ji-won, an assistant manager who spends her days burdened by an incompetent husband, neglectful in-laws, and a hard work life, and becomes a cancer patient at a young age. She gets her revenge with the assistance of Yoo Ji-hyuk.
In January 2025, Park departed from Hook Entertainment after her contract expired and joined Dareum Entertainment.
Park then starred in TV Chosun's crime-comedy series Confidence Queen, the Korean remake of The Confidence Man JP, where she played a genius con artist. It was the first so-called first Korean Amazon Original Drama which streams exclusively on Prime Video globally and Coupang Play in South Korea on September 6, 2025. She is starring in TvN's Siren's Kiss based on the 1999 Japanese television series Koori no Sekai by Hisashi Nozawa, in which she will play a high-profile art auctioneer who becomes the center of a criminal investigation.