Almost all robots have access to computer networks that offer extensive computing, memory, and other resources that can dramatically improve performance. Robots can use networks such as the Internet to communicate with remote resources such as human teleoperators or central servers for memory and computation. In contrast, swarm robots coordinate locally with neighbouring robots and resources. Networked robots trace their origin to telerobots (remotely controlled robots). Telerobots are widely used to explore undersea terrains and outer space, to defuse bombs, and to clean up hazardous waste. Early telerobots were accessible only to trained and trusted experts through dedicated communication channels, but today’s networked robots are more ubiquitous and are operated by less experienced users for a variety of tasks. This chapter will describe relevant network and communication technology, the history of networked robots, architecture and properties of networked robots, how to build a networked robot, example systems, and recent developments in Cloud- and Fog-Robotics.