 1. Recent studies have focused on characterizing natural fibers and comparing them with conventional composites in terms of mechanical behavior and application performance. 2. There are numerous types of natural fibers with varying properties that affect their use in specific industrial applications. 3. The natural origin of these materials causes significant variations in properties, making it challenging to select the appropriate fiber for a particular application. 4. A comprehensive review of the properties of natural fibers used as composite material reinforcement is presented, along with a bibliometric study on their applications and a prospective analysis of future trends and required developments to expand their use. This article was authored by Paulo Pecas, Hugo Carvalho, Hafiz Salman, and others.