1976, acronym for automated teller machine (1974), which was developed in modern form c. 1968. See teller.
Entries linking to atm
teller n.
"bank clerk who pays or receives money," late 15c., "person who keeps accounts," agent noun from tell (v.) in its secondary sense of "count, enumerate," which is the primary sense of cognate words in many Germanic languages. Earlier "person who announces or narrates" (c. 1300).