M2M may refer to:

Entertainment Mission to Mars (attraction) at Walt Disney World's Magic Kingdom, Florida USA Mission to Mars (2000), a science fiction film inspired by the attraction M2M (band), Norwegian pop duo Married to Medicine, Atlanta-based Bravo reality tv show

Technology M2M (Eclipse), an implementation of the Object Management Group's QVT standard for model transformation Machine to machine, direct communication between devices Many-to-many (data model), as an entity-relationship model Mobile-to-mobile convergence Mobile-to-mobile, a classification of phone call on some mobile phone plans

Other uses Man-to-man defense, a defensive tactic used in a variety of sports mothers2mothers, an international nonprofit organization dedicated to preventing mother-to-child transmission of HIV

See also MTM (disambiguation)

ja:M2M