This review explores the transformative potential of Pineapple Leaf Fibers (PALF) as a sustainable, nontoxic alternative to hazardous synthetic mineral fibers like asbestos through the lens of green nanotechnology. As the global industry seeks to mitigate the carcinogenic risks of traditional fibers and manage the millions of tons of agricultural waste generated annually, PALF emerges as a high-performance candidate due to its exceptional cellulose content and mechanical strength. We examine a multi-stage green synthesis pathway that replaces harsh industrial chemicals with biological extraction, organic acid scouring, and high-pressure homogenization to produce nanofibers with high aspect ratios.