In the realm of composite manufacturing, natural fibers have gained popularity due to their sustainability advantages. Plant-based biofibers are increasingly replacing synthetic fibers in composites, leading to the development of various biocomposites. Each type of natural fiber has unique chemical compositions and properties, requiring detailed analysis for comparison. Extensive research has highlighted the reinforcement potential of natural fibers, resulting in the production of high-performance biocomposites after years of study. Specifically, plant fibers like bast and leaf fibers are extensively utilized in the automotive sector. However, many other fibers, often examined only in laboratory settings, have yet to achieve large-scale commercial success. Additionally, it’s important to consider fibers derived from seeds (such as coir) and animal sources (like chicken feathers), as these are secondary products or waste materials. While bast fibers are frequently reviewed, other plants and animal fibers receive less attention. This review explores six types of plant fibers—bast, leaf, seed, straw, grass, and wood alongside animal fibers and regenerated cellulose fibers. It also delves into recent advancements in natural fibers and their composites, discussing fiber sources, extraction methods, availability, composition, and mechanical properties. The review outlines the benefits and drawbacks of each biofiber and briefly addresses three fabric architectures: nonwoven, woven, and knitted. Lastly, this chapter provides an overview of composite results from such fibers, with references for further detailed studies.