English: Therefore, in this work we propose the first taxonomy of knowledge gaps 3 in the context of

Wikimedia projects. We identify three macro-dimensions of the Wikimedia ecosystem, namely Readers, Contributors, and Content as the root of the taxonomy. We then review studies and discussions from scholars, researchers, practitioners and community members, and compile for

each of these dimensions a list of knowledge gaps as areas of the Wikiverse where we found evidence of potential inequality. Finally, we group these gaps into facets containing highly related knowledge gaps. The final 3-layer taxonomy is illustrated in Figure 1.