This review article examines recent advancements in dielectric resonator antenna (DRA) designs, particularly focusing on their applicability in array configurations for millimeter-wave (mmW) bands, which are crucial for 5G and beyond 5G applications. The authors discuss the increasing popularity of off-chip DRA designs, including in-substrate and compact DRAs, driven by cost-effective multilayer laminate manufacturing techniques such as printed circuit boards (PCBs) and low-temperature co-fired ceramic (LTCC). They highlight the growing demand for DRAs with beam-steering, dual-band functions, and on-chip alignment capabilities, which offer advantages over traditional lossy printed antennas in terms of lower conductive losses and greater design flexibility. The review covers various aspects of DRA designs, including material usage, manufacturing feasibility, overall performance, and applications. It compares different DRA designs, such as co-fabricated and in-template DRAs, substrate-integrated DRAs (SIDRAs), and on-chip DRAs, detailing their performance metrics and challenges. The authors also explore beam-steerable DRA arrays and dual-band DRAs, emphasizing their potential in mmW applications. Key findings include the compact size and wide bandwidth of DRAs, their versatility in shape and material, and their ability to achieve high gains and efficiency. The review concludes with a comprehensive discussion and a summary of the findings, providing valuable insights for researchers in the field of advanced dielectric resonator antenna technology.This review article examines recent advancements in dielectric resonator antenna (DRA) designs, particularly focusing on their applicability in array configurations for millimeter-wave (mmW) bands, which are crucial for 5G and beyond 5G applications. The authors discuss the increasing popularity of off-chip DRA designs, including in-substrate and compact DRAs, driven by cost-effective multilayer laminate manufacturing techniques such as printed circuit boards (PCBs) and low-temperature co-fired ceramic (LTCC). They highlight the growing demand for DRAs with beam-steering, dual-band functions, and on-chip alignment capabilities, which offer advantages over traditional lossy printed antennas in terms of lower conductive losses and greater design flexibility. The review covers various aspects of DRA designs, including material usage, manufacturing feasibility, overall performance, and applications. It compares different DRA designs, such as co-fabricated and in-template DRAs, substrate-integrated DRAs (SIDRAs), and on-chip DRAs, detailing their performance metrics and challenges. The authors also explore beam-steerable DRA arrays and dual-band DRAs, emphasizing their potential in mmW applications. Key findings include the compact size and wide bandwidth of DRAs, their versatility in shape and material, and their ability to achieve high gains and efficiency. The review concludes with a comprehensive discussion and a summary of the findings, providing valuable insights for researchers in the field of advanced dielectric resonator antenna technology.