Seoul Trimage, Modern skyscraper in Seoul, South Korea

Seoul Trimage is a four-tower apartment complex in Seongsu-dong 1-ga, Seongdong-gu, Seoul, completed in 2017. The towers rise 45 to 47 storeys, between 150 and 172 m, and hold 688 units above three basement levels. From across the Han River, the tallest pale tower tapers to a pointed top above the red-arched bridge and the low hills behind.

The Seongsu 1 housing cooperative formed in 2004 and planned a 2010 completion, but the 2008 financial crisis led the cooperative into bankruptcy in 2010. The project, renamed Trimage in 2014, was sold that March, began construction, and was completed and opened in March 2017. It was developed by Hanam Development and Doosan Heavy Industries.

The name Trimage combines "tri", meaning three, and "image". The complex appeared as the setting of the tvN drama "Let's Eat 3". Its hotel-style services include breakfast and lunch, all-day drinks, cleaning, linen, valet, porter and concierge assistance with reservations and government paperwork.

Seoul Trimage stands in Seongsu-dong 1-ga, Seongdong-gu, beside Seoul Forest and the Hangang riverside. The four towers are reached from the riverside road and the red-arched bridge visible in views across the water. The complex is a private residence: the lobby community facilities, the sky guesthouses on floors 19 of towers 101 and 102, and the rooftop gardens on floors 8–9 and 29–30 serve residents and their guests, not the general public.

The name Trimage combines "tri", meaning three, with "image"; the complex has four towers, not three. Its 688 units include sky guesthouses on the 19th floors of towers 101 and 102, with roof gardens and views over the Han River in all directions.