MBus or M-Bus may refer to:
MBus (SPARC), a computer bus designed for communication between high speed system components M-Bus, or Meter-Bus, a bus used for remote reading of gas or electricity meters (EN 13757) Message Bus (Mbus), an inter-process communication protocol (RFC 3259) Master of Business, a college degree MBus (Nokia), a bus used with Nokia mobile phones
See also Modbus