This chapter introduces the theoretical basis of the electrochemical methods and the technique of powder manufacture. The physical and chemical principles of electrolytic crystallization of dendrite deposits as well as the thermodynamics, kinetics, and mechanisms of electrolysis processes are discussed. Electrolysis of aqueous solutions, including metal precipitation in galvanostatic and patentiostatic conditions, production of multicomponent alloy powders, powder production using the method of zone electrochemistry, reduction from solution through film of surfactants, and special methods of production of metal powders recovered from spent solutions are considered. Technologies of powder production by electrolysis from melts are described. Processes of electrolytically precipitating metals with forming dendrite deposits by the contact displacement method are considered. The amalgam metallurgy method involving metal precipitation on the liquid mercury cathode and amalgam cementation is discussed. Usable equipment for electrolytic powder production, including schematics and working conditions, is characterized.