In this paper I examine the notion of ‘artifact’ and related notions (namely, ‘cognitive artifact’) in the dominant version of extended cognition theory (ECT) grounded on extended functionalism. Although the term is ubiquitous in the literature, it is far from clear what ECT means by it. How are artifacts conceptualized in ECT? Is ‘artifact’ a meaningful and useful category for ECT? If the answer to the previous question is negative, should we worry? Is it important for ECT to have a coherent theory of artifacts? And what are the demands and constraints that ECT imposes on this theory? I distinguish between two aspects of ECT, one narrow, aligned with extended functionalism (EF); and one broad or pluralistic, in which EF is combined with ot...