During the 70s and 80s of the last century, synthetic fibers replaced natural fibers, due to their better performance and relative low cost. It is only in the last 15–20 years that natural fibers have been gaining ground, largely due to the need to approach the industrial process in a sustainable way, causing a resurgence of interest, which is reflected in the increase in their use. Being sustainability the main concern worldwide, with this increase in fiber consumption, this demonstrates that usage of natural fibers needs to gain more significance and replace the synthetic fibers whenever possible. Natural fibers are an abundant material, light in weight, biodegradable, economical, have good mechanical properties, are from biomass, and are therefore promising in the area of composite reinforcement. Thus, in order to understand the importance of natural fibers, this paper focuses on the growing importance of natural fibers among the scientific community, namely understanding the growth and number of publications since 2000.