Ultraviolet (UV) shielding materials that still maintain a high transparency are highly desirable, especially if they are flexible, environmentally stable, sustainable, biocompatible and easy to fabricate. Herein, we demonstrate the potential of instant coffee and its polymer composites for transparent UV shielding materials. Poly (vinyl alcohol) (PVA) is used as the model polymer. A 100 μm thick composites film can provide UVA, UVB and UVC shielding of 93.0 %, 99.4 % and 99.4 % respectively without obviously impairing its visible transparency (77 %). This hybrid film can effectively protect various pigments from UV light induced photosensitive damage. High UV shielding performance of composites films can still retain after being subjected to UV dose of about 40 MJ/m2 under accelerated aging condition, which is approximately equivalent to that of 45-day outdoor exposure in Miami, Florida. The excellent UV shielding and UV stability performance might be mainly attributed to the co-existence of chlorogenic acid and melanoidin in the coffee, which could absorb UV light and dissipate it through fluorescence emission and thermal irradiation. Addition of coffee also substantially improves the thermal-oxidative stability of pure PVA film. This work opens up a green and facile biological methodology for the fabrication of UV shielding materials.