5-Undecanol is primarily used in the fragrance and flavor industry due to its pleasant, fatty, and waxy odor. It serves as a key ingredient in the formulation of perfumes, cosmetics, and personal care products, where it contributes to the overall scent profile. Additionally, it is employed in the production of synthetic flavors to impart a subtle, fatty character to food products. In industrial applications, it acts as an intermediate in the synthesis of other chemicals, including plasticizers and surfactants. Its properties also make it suitable for use in lubricants and as a solvent in various chemical processes.