This chapter explores the emerging field of ferroelectric superconducting quantum interference device (SQUID)-based memories, highlighting their potential to transform data storage in quantum computing and cryogenic systems. By integrating ferroelectric materials with traditional SQUID architectures, these hybrid devices leverage the unique properties of both superconductivity and ferroelectricity to create memory elements that are highly efficient, fast, and scalable. Ferroelectric SQUIDs combine the sensitivity of SQUIDs to magnetic flux with the non-volatile polarization states of ferroelectric materials, enabling robust storage of binary information. This chapter begins by introducing the fundamental principles of ferroelectric SQUIDs, explaining how the ferroelectric layer influences the critical current of the superconducting loop. It then delves into the mechanisms of memory operation, where the ferroelectric polarization state determines the phase difference across the Josephson junctions, allowing the device to store and retain information even in the absence of a power supply. Key advantages of ferroelectric SQUID-based memories, such as low power consumption, high-speed operation, and compatibility with existing superconducting circuits, are discussed in detail.