Union is a co-living development of two towers in the St John's area of Manchester, England.

The first phase, a 112 m (367 ft) tall, 36-storey skyscraper, is the first rent-by-the-room co-living building in the United Kingdom, where potential renters are matched with housemates based on their responses to a questionnaire.

[3] It was designed by Denton Corker Marshall and as of 2025 is the joint 17th-tallest building in Greater Manchester with Affinity Living Riverview in Salford.

[4] The planning application for phase one was submitted to Manchester City Council in April 2020 for a 36-storey building comprising co-living units, as well as amenity, flexible commercial (Sui generis), and co-work spaces.

The planning application for phase two was submitted to Manchester City Council in December 2019 for a 32-storey building comprising co-living units, amenity space, gym and flexible commercial space.