Application segmentation isolates Seitan usage into four dominant domains: Plant‑based meat alternatives, Prepared meals & snacks, Foodservice & catering, and Ingredient supply to manufacturers. Plant‑based meat alternatives dominate with an estimated 40 % share, reflecting the sector’s rapid growth as consumers substitute animal protein. Prepared meals and snack products, encompassing frozen entrees and protein‑rich bars, hold roughly 30 % of demand, capitalising on convenience trends. Foodservice and catering, including restaurant kitchens and institutional cafeterias, account for about 20 % of volume, where Seitan serves as a cost‑effective protein in bulk menu planning. The remaining 10 % comprises bulk ingredient sales to food processors that incorporate Seitan into composite formulations such as sausages, nuggets, and dairy analogues. This application‑focused Seitan segmentation illustrates how end‑use contexts drive distinct production volumes, pricing structures, and distribution networks within the market.