Boundary Bookstore is an independent bookstore in Mong Kok, Hong Kong, selling books on local Hong Kong culture and literature, social science titles, postcards and souvenirs. It displays books that are hard to find in large chain stores, including Taiwanese literature and Hong Kong works, arranged in rotating themed selections with staff recommendations. Inside the store, visitors can sit and read with ice water and air conditioning, and the space is also used for cultural events. The building is tucked away, so it is hard to find at first and people nearby do not know its location well.