A Body Area Network (BAN), also referred to as a Wireless Body Area Network (WBAN), Body Sensor Network (BSN), or a Medical Body Area Network (MBAN) is a computer network used to monitor, control, and communicate with electronic devices worn on or implanted in the human body.

A BAN typically consists of several sensors, actuators, and communication nodes connected wirelessly. The nodes may be embedded in clothing or implanted under the skin. They are usually powered by batteries or by harvesting energy from their surroundings using piezoelectricity or photovoltaics.

The first BAN was developed in 2003 by researchers at MIT. Since then, several companies have been working on developing commercial BAN products and applications. Some potential applications of BANs include monitoring vital signs, delivering drugs, and providing remote control of prosthetic limbs.