 Yablo’s paradox demonstrates that we can have logical paradoxes without self-reference—only a certain kind of non-wellfoundedness is needed to obtain a contradiction. There are obviously structural differences between the ordinary paradoxes of self-reference and Yablo’s paradox: The ordinary paradoxes of self-reference involve a cyclic structure of reference, whereas Yablo’s paradox involve an acyclic, but non-wellfounded, structure of reference. More precisely, the referential structure in self-referential paradoxes such as the liar is a reflexive relation on a singleton set (a cycle), whereas the referential structure in Yablo’s paradox is isomorphic to the usual less-than ordering on the natural numbers, which is a strict total order (contains no cycles). Even though there is this difference, Yablo’s paradox still share most properties with the ordinary paradoxes of self-reference. When solving paradoxes we might thus choose to consider them all under one, and refer to them as paradoxes of non-wellfoundedness. In the following we will however stick to the term paradoxes of self-reference, even though most of what we say will apply to Yablo’s paradox and related paradoxes of non-wellfoundedness as well.