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In the present study, regenerated cellulose fibres are functionalized with hydrolysed collagen from marine and bovine sources by surface treatment approach. A comparative study of collagen source is undertaken for the first time. Collagen infused fibres are subjected to various characterization like Fourier transform Infrared spectroscopy, X-ray diffraction, Scanning electron microscopy, Thermogravimetric analysis, Nitrogen estimation, water holding capacity studies and antistatic measurements. Performance studies were also undertaken to evaluate their benefits. Marine collagen obtained from bones, with lower loading (∼ 2 wt %) is found to be optimum. Collagen infusion renders significant improvement in ultraviolet protection factor, antistaticity and water holding capacity which makes the material a sustainable and premium choice for functional textiles. Evaluation of the fabric properties reveals an enhancement in shelf life and freshness of commodities. Usage of collagen, obtained from aquaculture/animal waste exhibits the potential of waste valorisation for textiles. The biodegradability of the product conforms to the green sustainable initiative. Conclusively, collagen modified viscose fibres provides a new direction for future technological development in the textile industry encompassing sustainable benefits.