What is the full form of DM in social media? What is the full form of DM in social media? › Category: General English Question › What is the full form of DM in social media? 1 Vote Up Vote Down Ayoush asked 3 years ago 1 Answers 0 Vote Up Vote Down Mir Afzal Staff answered 3 years ago D.M.: In computer and internet phrases there are multiple definitions for the DM abbreviation, DM means “Direct Message”. This is the most common definition for DM on Snapchat, WhatsApp, Facebook, and Twitter. Please login or Register to submit your answer Username or Email Address Password Remember Me