The Extremaduran Wikipedia (Extremaduran: Güiquipedia n'estremeñu) or Güiquipedia (formerly Güiquipeya) is the Extremaduran-language edition of Wikipedia, a free, online encyclopedia. It has 4,180 articles and is ranked 230th in the Wikipedia list according to the number of articles.

Different media have criticized the Extremaduran version of Wikipedia. It is questioned that the Extremaduran is not really a separate language, but instead a dialect of Asturian and Castilian, and that it does not have defined spelling rules, although the OSCEC (Monitoring and Coordination Body of Extremaduran and its Culture) has worked on the standardization of Extremaduran through dictionaries and normative grammar materials. The fact that the page only has three main contributors, the same who initiated the project, has also been the subject of controversy.