The book "Density-Functional Methods for Excited States" offers a comprehensive analysis of current trends in chemical research, particularly in the area of density functional methods for excited states. It is part of the series "Topics in Current Chemistry," which presents critical reviews on modern chemical topics. The content is designed to be accessible to both professionals and non-specialists in academic and industrial research. The authors, including Miquel Huix-Rotllant and Nicolas Ferré, highlight the most significant developments of recent years and provide insights into the methodology that enables readers to understand the concepts discussed. The book is not just a compilation of data; it promotes conceptual thinking and offers perspectives on future developments in this dynamic research field.