Hydrogels are considered ideal matrices for biomedical and drug delivery applications due to their unique properties such as biocompatibility, biodegradability, and water absorption capacity. Natural polymers, especially gums, are particularly suitable for the fabrication of advanced hydrogels owing to their biocompatibility, hydrophilicity, and ability to be modified through chemical alterations. In this study, a novel composite with the structure Guar gum-grafted-poly(acrylic acid)/cobalt ferrite (GG-grafted-PAA/CoFe₂O₄) was synthesized to enhance functional properties and broaden biomedical applications. The composite was prepared through the graft polymerization of acrylic acid (AA) onto guar gum (GG) using ammonium persulfate (APS) as an initiator. Pre-synthesized cobalt ferrite (CoFe₂O₄) magnetic particles, obtained via the co-precipitation method, were incorporated into the hydrogel matrix during the polymerization process. A three-dimensional hydrogel network was formed by adding the reaction mixture to a borax solution, serving as a non-toxic and biocompatible crosslinking agent. The chemical properties, morphology, thermal stability, and magnetic characteristics of the composite were characterized using various analytical techniques, including Fourier-transform infrared spectroscopy (FTIR), energy-dispersive X-ray spectroscopy (EDX), thermogravimetric analysis (TGA), X-ray diffraction (XRD), and field-emission scanning electron microscopy (FESEM). The results revealed that the composite exhibited ferromagnetic behavior, with a saturation magnetization (Ms) of 3.22 emu/g, as determined from magnetic hysteresis curves. TGA analysis indicated that the modification of guar gum and the formation of the composite significantly improved thermal resistance, with a residue weight of 72.6 % at 800°C.