For Your InformationFYI is a common abbreviation of "For Your Information". Meaning of fyi in English · fyi | American Dictionary · fyi | Business English · Translations of fyi · Browse · Test your vocabulary with our fun image quizzes. FYI is a written abbreviation for 'for your information,' often used in notes and documents when giving someone additional information about something. This term is included in our list of chat term and other chat acronyms FYI pronounced. ARCHIVED: What do BTW, FAQ, FYI, IMHO, RTFM, and other acronyms mean? This content has been archived, and is no longer maintained by. FYI means For Your Information.