Multiple choice general knowledge culture "EN" is the ISO code of ________ laguage? Greek Spanish English Esperanto Reveal answer Fill a bubble to check yourself C Correct answer Explanation The ISO 639-1 code 'EN' represents the English language. This is one of the most widely recognized ISO language codes globally. Spanish has 'ES', Greek has 'EL', and Esperanto has 'EO' as their respective codes.