Th is article explores a cognitivist approach to concepts. Such an approach steers a middle course between the Scylla of subjectivism and the Charybdis of objectivism. While concepts are not mental particulars, they have an ineliminable cognitive dimension. Th e article explores several versions of cognitivism, focusing in particular on Künne’s Neo-Fregean proposal that concepts are modes of presentation. It also tackles a challenge facing all cognitivist accounts, namely the ‘proposition problem’: how can the cognitive dimension of concepts be reconciled with the idea that concepts are components of propositions. My moral is that this challenge can be met only by combining Neo-Fregean ideas with certain Wittgensteinian insights.