This research presents Quantum-Entangled Lattice-Augmented Cryptographic System (QELACS) a next-generation hybrid cryptographic framework that fuses quantum entanglement with algebraic lattice-based encryption to deliver quantum-safe, scalable, and high-performance data security. Unlike traditional hybrid models that merely layer quantum and classical methods, QELACS deeply integrates quantum mechanics into the cryptographic core, enabling entanglement-assisted operations across the encryption lifecycle. The framework introduces three foundational algorithms: Entanglement-Augmented Secret Key Generation (EASKG) for ultra-secure and rapid key production, Quantum-Lattice Encryption and Decryption (QLED) for post-quantum data confidentiality, and Quantum-Augmented Hybrid Authentication (QAHA) to establish resilient dual-layer authentication. These components jointly ensure end-to-end protection - confidentiality, integrity, and authenticity - against both classical and quantum adversaries. Analytical and experimental evaluations reveal that QELACS enhances key generation speed by 125%, reduces cryptographic latency by 59%, and minimizes security compromise risk to just 0.01%, significantly outperforming existing hybrid solutions. Designed for real-world adoption, QELACS is interoperable with current cryptographic infrastructures, tolerant to system noise, and compliant with NIST's post-quantum security guidelines. This work provides a strong foundation for secure communications in the quantum computing era, offering a transformative leap toward future-ready cryptographic ecosystems.