<p>Chiral assembly endows perovskite materials with well-defined structural chirality and optical anisotropy, creating unique opportunities for multidimensional modulation in optoelectronic applications. Recent advances have demonstrated effective amplification of chiral signals, band structure engineering, and enhanced spin–orbit coupling through diverse strategies, including template-guided assembly, ligand-induced assembly, and several emerging approaches. This review highlights the latest progress in chiral perovskites for circularly polarized light-emitting devices, polarization-sensitive photodetectors, polarization imaging, optical communication and encryption, and spintronic and quantum information applications. Particular attention is devoted to the mechanistic correlations between assembly strategies and key performance parameters of chiral perovskites, such as dissymmetry factors, photoluminescence quantum yields, spin polarization degrees, and device stability. Representative studies are analyzed to elucidate the interplay between material architecture and device functionality. Despite remarkable progress, challenges remain, including limited stability, chirality retention, interface engineering, and scalable fabrication. Looking forward, the integration of multiple assembly strategies with multiscale theoretical modeling and machine learning-assisted design is anticipated to accelerate the translation of chiral perovskites from laboratory demonstrations to real-world applications in advanced optoelectronic devices, secure communication systems, and quantum information technologies.</p> Graphical abstract <p></p>