The importance of Wikipedia for the documentation and promotion of museum holdings is gaining acceptance, and the number of references to articles is growing. However, the museum world still pays little attention to the Wikipedia project as a collaborative community with intentions, structures, and special features. Although these observations are based on museums in Germany and focus on the German Wikipedia, they are just as important and applicable to other museums and other editions of Wikipedia. Universities and libraries have already taken advantage of the Wikipedia and have established functional links. In that the mission of museums is closely related to that of universities and libraries, the value of Wikipedia for museum professionals is worthy of consideration. This paper provides the complete study to serve as reference for the selected topics to be discussed in the professional forum.