Parnas Tower, Commercial office tower in Gangnam District, Seoul, South Korea.

Parnas Tower is a 183-metre office skyscraper in Samseong-dong, Gangnam District, Seoul, with 40 above-ground floors and 8 basement levels. Its facade is a tight grid of dark blue-grey glass panes, and the vertical edges are slightly faceted rather than sharp right angles. A lower podium carries a dark sign reading "cbx" in yellow letters. Offices occupy floors 6 to 24 and 26 to 39, with a mechanical and refuge floor at 25.

Planning for Parnas Tower began in 2012, and construction started on 1 May 2013 after the final permit. The original plan included a hotel, but this was dropped in June 2015 and the building became offices only. It opened on 1 September 2016, with a completion ceremony on 4 October 2016. GS Engineering & Construction developed and built it, and Changjo Architects designed it.

The tower appears as the offices of the Cha Young-woo law firm in the 2014 drama "Angel Eyes" (개과천선) and as the Mujin Group headquarters in the 2016 series "Night Light" (불야성). It also features in the 2017 drama "Borg Mom", the 2019 series "Sleep Bank" and the 2022 drama "Extraordinary Attorney Woo".

The tower features seven underground parking levels with space for 600 vehicles and connects directly to Samsung Metro Station and the Parnas Retail Mall for easy access. Visitors can reach it conveniently by public transport or by car with ample parking available.

The tower's 22 elevators include three observation elevators, a detail visible in the lobby's elevator bank. The building earned the 2016 Eco-Environment Architecture Award and a 2017 Seoul Architecture Award in the green building category. It also appears as the law firm building in the 2014 drama Angel Eyes.