The papers collected together in this volume were presented to the attendees of the 5th International Conference on Recrystallization and Grain Growth held in Sydney in May 2013. The conference is the 5th in a series and follows on from the successes of the 1st joint conference on ReX & GG (Aachen, Germany), the 2nd conference (Annecy, France), the 3rd conference (Jeju Island, Korea) and the 4th conference (Sheffield, UK). Recrystallization and grain growth are mechanisms that alter the microstructure without necessarily altering the phase. They are typically driven by high internal elastic and surface energies though sometimes other volumetric energy terms appear. The topic is important to materials engineers and scientists and geologists alike. The former typically aim to exert control over the phenomena for technological and economic benefit while the latter often seek in these mechanisms the answers to questions regarding events long gone.