The 9 volume set LNCS 15484-15492 constitutes the refereed proceedings of the 30th International Conference on the Theory and Application of Cryptology and Information Security, ASIACRYPT 2024, which took place in Kolkata, India, during December 9-13, 2024. The 127 full papers included in the proceedings were carefully reviewed and selected from 433 submissions. They were organized in topical sections as follows: Advances Primitives; homomorphic encryption; digital signatures; public-key cryptography; pairing-based cryptography, threshold cryptography; isogeny-based cryptography; post-quantum cryptography; secure data structures; lattice-based cryptography; lattice assumptions; key exchange protocols; succinct arguments; verifiable computation, zero-knowledge protocols; secure multiparty computation; blockchain protocols; information theoretic cryptography; secret sharing; security against physical attacks; cryptanalysis on symmetric-key schemes; cryptanalysis on public-key schemes; fault attacks and side-channel analysis; cryptanalysis on various problems; quantum cryptanalysis; quantum cryptography; symmetric-key cryptography.