Nanoparticle Drug Delivery System segmentation by type classifies the market into five material‑based categories, each influencing the total market size through distinct manufacturing and regulatory pathways. Lipid‑based nanoparticles (e.g., liposomes, solid‑lipid nanospheres) dominate with an estimated 35 % share, owing to their biocompatibility and established FDA precedents. Polymeric nanoparticles (e.g., PLGA, chitosan) account for roughly 30 %, driven by tunable degradation rates and functionalization capacity. Inorganic nanoparticles (e.g., gold, silica, iron‑oxide) comprise about 20 %, reflecting their utility in imaging‑guided delivery and stimulus‑responsive release. Protein‑based nanoparticles (e.g., albumin, ferritin) contribute near 10 %, benefiting from intrinsic targeting ligands and low immunogenicity. The remaining ~5 % is attributed to hybrid nanoparticles, which integrate two or more material classes to exploit synergistic properties. This type‑centric taxonomy clarifies how material selection shapes cost structures, scalability, and therapeutic scope within the Nanoparticle Drug Delivery System market.