In recent years, there has been a growing interest in effectively managing agro-industrial waste. One promising approach that has gained attention is exploring this waste to develop new composite materials, especially polymeric materials, with diverse applications across various industries. This study focuses on comprehending the physical and thermal properties of fibrous residues derived from achira (Canna edulis Ker). To achieve this, several analyses, including thermogravimetric analysis (TGA), differential scanning calorimetry (DSC), and Fourier transform infrared spectrometry (FTIR), have been conducted. Additionally, parameters such as moisture percentage, moisture absorption, bulk density, and lignin percentage have been calculated. The results indicate similarities between achira fibers and other characterized fibers, such as bamboo and other natural fibers studied in scientific research. Based on these findings, it is evident that integrating achira fibers into polymeric matrices is a feasible option. The results of this research offer an opportunity to utilize these materials and contribute to the advancement and strengthening of the recycled raw materials market, promoting sustainability and the circular economy.