The Penthouse: War in Life (Korean: 펜트하우스) is a South Korean television series starring Lee Ji-ah, Kim So-yeon, Eugene, Um Ki-joon, Yoon Jong-hoon, and Park Eun-seok. The series, directed by Joo Dong-min and written by Kim Soon-ok, spins the story of a real estate and education war, a desire to be number one. It depicts the solidarity and revenge of women who turned to evil to protect themselves and their children. It premiered on SBS TV on October 26, 2020.

At the end of the first season, the series was the 9th most viewed Korean television series, with 5.354 million viewers. The series achieved the number-one position in all-channel mini-series 21 times in a row from its first broadcast on October 26, 2020, to the last episode on January 5, 2021.

At the end of the second season, the series placed 8th among the most viewed Korean series, with 5.69 million viewers. The series achieved the number-one position in all-channel mini-series 13 times in a row from its first broadcast on February 19, 2021, to the last episode on April 2, 2021.

At the end of the third season on September 10, 2021, the series was the 18th most-viewed Korean series with 3.77 million viewers.