The editors of the volume Inorganic Chemistry in Spain have intended to achieve a collection of some chapters featuring the work of Spanish experts in Inorganic Chemistry, each one having specific expertise in some field. Areas that cover theory, classical coordination compounds, new materials, supramolecular assemblies, mechanisms of reactions, magnetism, organometallic complexes, and catalysis are included. In all cases, a special relevance is given to a deep understanding of the behavioural properties of the compounds featured, not only to their mere preparation methodologies, which had been historically related to classical Inorganic Chemistry.