In this chapter the major focus is basically on the direct and/converse magnetoelectric (ME) coupling-based devices. The direct ME coupling-based devices are the mainly magnetic and current sensors, gyrators, transformers, and wireless power transfer. And in case of converse ME coupling-based devices are mainly focused as ME random access memory (MERAM), filters, phase shifters, and voltage tunable inductors. This chapter is also dedicated to the acoustic transmission, surface acoustic waves, the use of surface acoustic wave devices as radio frequency signal filters, delay lines, sensors, and acoustic driven magnetic resonance. Also, the focus will be on the role of strain-mediated ME coupling and piezoelectric effect in surface acoustic waves. In continuation of biomedical applications, this chapter is also dedicated to the bio-medical applications such as drug delivery process, ME antenna for neurological applications and ME coupling-based bio magnetic field sensor etc.