This book introduces interesting topics, from concepts to the latest research, on cellular and micro robotic systems. The cellular robotic system is a self-organizing robotic system composed of a large number of autonomous robotic units, named "cells." This idea came from the organic structure of a living body. Several attractive topics in this area are covered, such as swarm intelligence, communications, and robotic mechanisms. The micro robotic system is currently the most fascinating technology. Micro mechanisms, control and intelligence, with respect to this system are treated here. The combination of both technologies will prepare the way for a new paradigm in the field of engineering. Contents: "Introduction: "IntroductionDecentralized Robotic System"Cellular Robotics: "Concept of Cellular RoboticsCommunication IssuesNetwork OrganizationCooperative Decision Making Using Genetic AlgorithmStructural RealizationConclusions"Micro Robotic Systems: "Concept of Micro Robotic SystemsMicrofabricationDexterous ControlHigh-Precision ControlNon-Contact ControlConclusions Readership: Engineers.