Miksa Déri (1854, Bač (Serbia) - 1938) was a Hungarian electrical engineer. He was, with his partners Károly Zipernowsky and Ottó Bláthy, co-inventor of the closed iron core transformer and the ZBD model AC electrical generator.
ZBD was an abbreviation of the three men's names: Zipernowsky, Bláthy and Déri.
Déri is also noted for inventing a type of repulsion motor.