Multi-drug resistant (MDR) infections represent one of the most serious global health threats of the twenty-first century. The increasing prevalence of antimicrobial resistance has significantly compromised the effectiveness of standard therapeutic options, leading to prolonged hospitalizations, increased healthcare costs, treatment failures, and higher mortality rates. MDR pathogens are responsible for a growing burden of healthcare-associated and community-acquired infections worldwide. This study reviews the clinical characteristics, epidemiology, risk factors, diagnostic approaches, treatment challenges, and emerging management strategies associated with MDR infections. Through a comprehensive review of contemporary literature, surveillance reports, and clinical studies, the research examines major MDR organisms including methicillin-resistant Staphylococcus aureus (MRSA), extended-spectrum beta-lactamase (ESBL)-producing Enterobacterales, carbapenem-resistant Enterobacterales (CRE), multidrug-resistant Pseudomonas aeruginosa, and multidrug-resistant Acinetobacter baumannii. Findings indicate that MDR infections are associated with increased morbidity, mortality, healthcare resource utilization, and therapeutic complexity. The study concludes that effective control requires integrated antimicrobial stewardship, rapid diagnostics, infection prevention measures, surveillance systems, and development of novel antimicrobial agents.