Application‑based Rifampin segmentation isolates four usage clusters: tuberculosis (TB) treatment, leprosy therapy, prophylactic regimens, and research/diagnostic supplies. TB treatment accounts for the bulk of demand, representing approximately 70 % of global sales, because Rifampin is a cornerstone of the WHO‑recommended short‑course regimen and is procured through extensive public‑health contracts. Leprosy therapy, although a niche indication, contributes about 15 % of revenue, driven by endemic regions where multidrug therapy relies on Rifampin as the primary bactericidal component. Prophylactic applications—principally post‑exposure chemoprophylaxis for latent TB infection—capture roughly 10 % of the market, reflecting growing screening programs in high‑risk populations. The remaining 5 % originates from research and diagnostic supplies, including reference standards and clinical‑trial material. This application taxonomy clarifies how each segment’s pricing structure, reimbursement landscape, and epidemiological trends collectively determine the overall Rifampin market size, reinforcing the importance of targeted supply‑chain strategies. In addition, policy shifts toward universal health coverage are likely to expand prophylactic uptake, modestly increasing its share in the next decade.