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Eco-friendly and biodegradable composites are desirable due to the enormous pressure on industry as a result of the air pollution, global warming and the scarcity of fossil fuels. On the other hand, due to inherent viscoelasticity of the matrix phase, polymer composites are prone to creep and stress relaxation. Therefore, the main goal of this work is to study the hybridization effect on the viscoelastic properties of composites reinforced natural fibres. For this purpose, composites with the same lay-up, but with different fibres (flax and glass fibres), were manufactured with a green epoxy resin. These viscoelastic properties were evaluated in bending mode. It was concluded that, contrary to creep deformation, stress decreases with time, but this tendency is strongly attenuated with the addition of glass fibres. Therefore, the hybridization is an efficient way to decrease the viscoelastic behaviour of natural fibre reinforced …