This monograph offers a critical overview of the current debate on The Semantics of Knowledge Attributions. It falls into five main parts. In Part I, the book introduces the reader to the literature on ‘knowledge’-attributions by outlining the historical roots of the debate and providing an in-depth discussion of epistemic contextualism. After examining the advantages and disadvantages of the view, Part II offers a detailed investigation of epistemic impurism (or pragmatic encroachment views), while Part III is devoted to a careful examination of epistemic relativism. Part IV then discusses two different types of strict invariantism (psychological and pragmatic), while the final part of the book, Part V, is devoted to Presuppositional Epistemic Contextualism—a version of contextualism that is argued to provide a more powerful and elegant account of the semantics of ‘knowledge’-attributions than many of its competitors. Each of the views discussed in this book is outlined in detail by offering a clear and precise account of the main principles underlying each view and how they aim to explain the pertinent data and resolve philosophical puzzles and challenges. The book also provides charts outlining the relations between the positions discussed and offers suggestions for further readings.