Opened in Hong Kong in April 2005, apm is a shopping mall in Millennium City 5, a commercial property developed by Sun Hung Kai Properties.
Together with Millennium Cities 1, 2, 3, and 6 (under construction), they are commercial properties situated along Kwun Tong Road. apm is next to the Kwun Tong MTR Station. There is also a 7-storey shopping arcade with an array of restaurants, clothing stores, cosmetics shops, and a cineplex. It also contains a bus terminus and parking facilities. It is the largest mall in the district, and caters for the habits of the community by having extended operating hours. Its name 'apm' implies that visitors are welcome during day and night. In fact, many shops inside the mall are open overnight. Some retail shops close at 12 midnight, and restaurants close at 2am. There are also stores that operate 24 hours.