The concept of concealed antiaromaticity and the structural motifs and design strategies described in this article will enable the conscious, rational design of molecules that exhibit the desirable properties of antiaromatic molecules in redox reactions, upon photoexcitation, and in intermolecular interactions. Moreover, tailoring molecules and materials based on this conceptual framework can facilitate their preparation, processing, and application by avoiding or diminishing the undesirable low stability of antiaromatic compounds. By considering the factors impacting the degree of concealment, molecules with different types of concealed antiaromaticity can be obtained, each type being ideal for different applications: (i) As shown for several molecules with Type I-CA, this type of concealed antiaromaticity is highly interesting for use as battery electrode materials, as the stability of the charged states is improved by the occurrence of global aromaticity in these states, addressing a common issue of currently used organic battery electrode materials. At the same time, concealing the antiaromaticity in the neutral state ensures that the stability of this state is not affected, enabling excellent reversibility of the redox reaction. It is envisioned that Type I-CA can also be an interesting feature for other applications that involve redox reactions, such as electrocatalysis and photoredox catalysis, where it may facilitate charge accumulation. For molecules with Type I-CA that undergo planarization upon reduction or oxidation, applications that can exploit this reversible conformational change are also promising. (ii) Similarly, molecules with Type II-CA are of interest for various applications, including singlet fission, as self-healing fluorophores, photoresponsive liquid crystals, and molecular probes. Applications in singlet fission exploit the low energy of the lowest triplet excited state relative to the energy of the lowest singlet excited state of molecules with Type II-CA, a property related to the Baird aromaticity in the excited states. The relative energies of the two states can be tuned depending on the degree of concealment. Self-healing fluorophores can be obtained by covalently linking a fluorophore to a molecule with Type II-CA, which can act as a quencher of the otherwise long-lived, nonfluorescent triplet state that occurs if the fluorophore undergoes intersystem crossing. The process benefits from the Baird aromaticity of molecules with Type II-CA in the lowest triplet excited state, improving the performance of the fluorophore and avoiding the formation of reactive oxygen species. Photoresponsive liquid crystals and molecular probes both exploit the planarization of molecules with Type II-CA upon photoexcitation, requiring them to be conformationally flexible. (iii) Type III-CA is expected to be of particular interest for organic electronics and supramolecular architectures. Both applications utilize the close, energetically favourable intermolecular interactions of the π-electron systems of molecules with Type III-CA. In organic electronics, the effective intermolecular π-electron delocalization that can arise from these interactions is expected to enable materials with excellent intermolecular charge transport properties, potentially benefiting from stacked-ring aromaticity. In supramolecular chemistry, the energetically favourable intermolecular interactions can act as a driving force for self-assembly.