at the end of a conversation through texting or online of people who just met eachother person 1: ok well ill be going now, ntmy person 2: nice to meet u too. ntmy : nice to meet you. So now you know - NTMY means "Nice To Meet You" - don't thank us. What does NTMY mean? This page is about the various possible meanings of the acronym, abbreviation, shorthand or slang term: NTMY. What Does NTMY Mean? NTMY means "Nice to Meet You".