Hydrotreated Vegetable Oil (HVO) segmentation by type distinguishes three feed‑stock categories that determine production economics and sustainability credentials. Waste‑derived HVO—sourced from used cooking oil, restaurant grease, and post‑consumer fats—accounts for roughly 55 % of global output, reflecting its low raw‑material cost and strong alignment with circular‑economy policies. Virgin‑oil HVO, produced from purpose‑grown rapeseed, soybean, or palm oil, contributes about 35 %, driven by stable supply contracts and higher cetane performance that appeals to premium diesel blends. Animal‑fat HVO, including tallow and poultry fat, represents the remaining 10 %, where regional livestock processing capacity creates a niche supply stream, particularly in North America. Each type influences the overall market size differently: waste‑derived feedstock expands volume through cost‑effective scaling, virgin‑oil feedstock sustains higher price points and regulatory compliance, and animal‑fat feedstock adds diversification that mitigates feed‑stock risk. Understanding these type‑specific dynamics is essential for investors evaluating refinery retrofits, feed‑stock sourcing strategies, and lifecycle‑assessment outcomes within the HVO market.