The processing of agricultural wastes such as banana plant fibre and pineapple leaf fibre which might partially substitute for jute or mesta and cotton, respectively, in certain areas is discussed. Banana fibre is much coarser than jute, but it possesses good strength and a non-meshy structure with well separated long filaments as well as higher extensibility and softness. The pineapple leaf fibre is about ten times as coarse as cotton although it is as fine as finer quality jute with well separated filaments. The bundle strength of the pineapple leaf fibre diminishes on wetting but the yarn strength increases. A suitable technique has been developed for processing and spinning banana fibre on standard jute machinery. Hessian with jute warp and banana fibre weft and sacking with banana fibre warp and jute weft comply with ISI specifications for hessian and sacking cloth. An A-twill (sacking) bag with banana fibre yarn withstands 50% more drops than a normal jute A-twill bag. In addition, banana fibre can replace mesta fibre in making agricultural ropes where about 40% mesta is normally used in the fibre batch. Suitable techniques are also discussed for the processing and spinning of pineapple leaf fibre in jute, cotton, worsted and flax spinning systems, which succesfully process the fibre, alone or in admixture with jute, wool and cotton. Improved yarn performance in the hot water bath flax spinning system has been noticed. The possibility of the gradual utilisation of the products in commercial sectors like upholstery, twine, etc. is envisaged, and some prerequisites for the commercial utilisation of the two agrowaste fibres are suggested.