The rise of antibiotic-resistant bacterial infections has become a significant global health threat, necessitating the need for alternative therapeutic strategies. The use of bacteriophages-viruses that particularly infect and lyse bacteria-in phage therapy has resurfaced as a potentially effective substitute for conventional antibiotics. This narrative review aims to explore the mechanisms, applications, challenges, and prospects of phage therapy in combating antibiotic-resistant infections. A thorough analysis of the literature was carried out by exploring online databases, such as Google Scholar, PubMed, Scopus, and Web of Science. The search focused on peer-reviewed articles, clinical trials, and authoritative reports published in the last 10 years. The review synthesized findings from studies on phage mechanisms, therapeutic applications, regulatory challenges, and advances in phage engineering. Phage therapy demonstrates several advantages over antibiotics, including high specificity for target bacteria, the ability to penetrate biofilms, and a lower propensity for resistance development. However, significant challenges remain, such as regulatory and production hurdles, the potential for phage resistance, and interactions with the host immune system. Advances in genetic engineering have enhanced the therapeutic potential of phages, and personalized phage therapy is emerging as a viable approach for tailored treatments. Phage therapy holds significant promise as an alternative to antibiotics, particularly in the fight against antibiotic-resistant bacteria. While challenges persist, ongoing research, technological advancements, and collaborative efforts are crucial for integrating phage therapy into mainstream clinical practice, potentially revolutionizing the treatment of bacterial infections and addressing the global antibiotic resistance crisis.