The present experiment on “Underutilized Palmyra Palm (Borassus flabellifer) Fruit Fibre for Textile Application” was conducted during the year 2021-2024 at UAS, Dharwad with the specific objectives to extract, process and characterize the palmyra palm fruit fibre, to find out the possibilities of blending palmyra palm fibres with cotton fibres to produce blended yarns, to assess the yarn properties, to develop the diversified woven fabrics and nonwovens from palmyra palm blended fibres and yarns, to assess the mechanical and functional properties of woven fabrics and nonwovens and to calculate the cost of production of the woven union fabrics and nonwovens. Palmyra palm fruits were procured from the areas of Andhra Pradesh and Karnataka and the fibre was extracted manually with the help of sharp blade. The extracted fibre was subjected to wet processing treatments viz., scouring, bleaching and softening. The softened fibres were blended with cotton fibre in different proportions viz., 90:10 cotton / palmyra palm, 80:20 cotton / palmyra palm, 70:30 cotton / palmyra palm, 60:40 cotton / palmyra palm and 50:50 cotton / palmyra palm to produce blended yarns and the blend proportions 70:30 palmyra palm / cotton, 50:50 palmyra palm / cotton and 30:70 palmyra palm / cotton to prepare needle punch nonwovens. The blended yarns were further used for the development of cotton x cotton / palmyra palm union fabrics on projectile loom. The developed union fabrics and nonwovens were subjected to mechanical properties, functional properties and consumer acceptability study. The results revealed that the percentage extraction of palmyra palm fruit fibre from each fruit was found to be 3.75 per cent. The scoured, bleached and softened fibres were finer with improved strength. The blended yarns possessed greater strength than pure cotton yarns. The union fabrics woven with blended Palmyra palm yarns were heavier, stiffer, thicker and stronger than pure cotton fabrics. The tensile strength (36.27 kgf), abrasion resistance (2.26% weightloss), pilling (rating 4), was better for cotton x 50:50 cotton / palmyra (CP5) union fabrics, while elongation (15.52 %), drape coefficient (70.29 %), wettability, air permeability (233.83 cm3/cm2/sec) are better for cotton x 90:10 cotton / palmyra (CP1) union fabrics. Though the mechanical and functional properties were greater for cotton x 50:50 cotton / palmyra (CP5) and cotton x 90:10 cotton / palmyra (CP1) union fabrics, the consumers accepted cotton x 90:10, 80:20 and 70:30 cotton / palmyra palm union fabrics for apparel purpose and cotton x 60:40 and 50:50 cotton / palmyra palm union fabrics for furnishings and handicrafts. Whereas, the nonwovens are suitable for geotextiles, soil protectors, mulch mats, filtrations, bedding and furniture applications. The cost of production for cotton / palmyra palm union fabrics was ranged from Rs. 194.81 to Rs. 232.74, while the cost of production of nonwovens ranged from Rs. 107.97 to Rs. 144.90. The cotton x palmyra palm union fabrics upto 30 per cent were economical compared with pure cotton fabric (Rs. 210.00).