 The question of the nature and plausibility of realism is so controversial that no brief account of it will satisfy all those with a stake in the debates between realists and non-realists. This article offers a broad brush characterization of realism, and then fills out some of the detail by looking at a few canonical examples of opposition to realism. The discussion of forms of opposition to realism is far from exhaustive and is designed only to illustrate a few paradigm examples of the form such opposition can take. Note that the point of this discussion is not to attack realism, but rather to give a sense of the options available for those who wish to oppose realism in a given case, and of the problems faced by those main forms of opposition to realism. 