Graphene-based Fibers (GBFs) segmentation by application provides the primary lens for quantifying market dynamics. In aerospace and defense, the high specific strength and thermal stability of GBFs support lightweight structural components and heat‑shielding fabrics, accounting for roughly 28 % of total revenue. Automotive adoption focuses on crash‑energy‑absorbing panels and conductive wiring, contributing about 22 % as manufacturers pursue weight reduction and electric‑vehicle integration. Sports and leisure applications—such as high‑performance rackets, protective gear, and climbing ropes—represent 15 % of the market, driven by durability demands. Electronics leverages GBFs for flexible antennas, EMI shielding, and wearable sensors, generating 12 % of sales. The medical and healthcare segment, encompassing antimicrobial dressings and bio‑compatible sutures, holds 9 % of the market. Finally, textiles and apparel, where GBFs are blended into fabrics for conductivity and strength, account for the remaining 14 %. Collectively, these application categories delineate the market taxonomy and explain the distribution of GBFs revenue across end‑use sectors.