The Modern Languages department, one of the largest at King Edward's, teaches French, German, Spanish and Mandarin. French is currently compulsory for all until GCSE and is introduced in the Shells. German and Spanish are introduced as options in the Upper Middles. Optional classes in Mandarin, which take place before school, are open to boys in any year group. Among the many visits abroad are a French exchange with Grasse, work experience in Germany and language courses in Salamanca.

The department has 3 language assistants and a state-of-the-art language laboratory, not to mention its own website, which provides full details of staff, courses, exam results and foreign trips, together with advice on language learning and career opportunities.