The Students’ Union Bookshop Co-op is located on the first floor of House 6. It is open between 9:30am and 5:30pm, Monday to Friday, throughout each term. Bookshop staff also organise bookstalls in the Arts Block and Hamilton on a regular basis. The Co-op buys books from students for resale during the college year. A couple of special book-buying days are organised to coincide with the end of exams in early June, with a fixed rate of 30% RRP being offered for all books.

The Co-op endeavours to stock books relevant to all the various courses taught in Trinity, as well as a broad range of literary fiction. Lab coats and dissection instruments are also available for purchase.