Metallic implants have attracted a great deal of attention due to their importance in terms of enhancing the quality of human lives and treating human diseases. However, their instability in vivo, caused by corrosion, limited mechanical properties, and poor biocompatibility, remains a great challenge yet to be solved-which is important because the stability of metallic implants is closely associated with the clinical performance of medical implants. This topic has, therefore, attracted increasing levels of attention from researchers in recent decades and the great advances have been achieved. In order to provide a platform to communicate the latest findings of researchers, to broaden understanding and to deepen insights into "advances in the stability of metallic implants", we organized a Special Issue focused on this topic and ten articles have to date been published in the journal Metals. With the aim of facilitating reader access and ongoing research, we have compiled and published 10 articles from this Special Issue.