Abstarct: In this research, a magnetic Mg-MOF adsorbent baxsed on cobalt ferrite was synthesized and used for the simultaneous removal of methylene blue and crystal violet dyes from wastewater. The adsorbent was characterized using FT-IR, SEM, and EDX techniques. A derivative method was employed for the simultaneous measurement of the concentration of the two dyes. To obtain the best efficiency in dye removal using the synthesized adsorbent, the effects of parameters such as pH, initial dye concentration, adsorbent dosage, contact time, temperature, and ionic strength on removal efficiency were investigated in both single and binary dye solutions. Optimal conditions were determined as pH 7, a mixed dye concentration of 30.0 mg/L, 0.020 g of synthesized adsorbent at room temperature. Different adsorption isotherms were investigated for dye removal by the synthesized adsorbent in single and binary systems. The Langmuir isotherm showed better fitting for the equilibrium data of the synthesized adsorbent in the single-component system, while the Freundlich isotherm provided a better fit in the binary system. The adsorption kinetics of the dyes were also investigated, with the pseudo-second-order kinetic model found to be suitable for both dyes. To determine whether the adsorption process was spontaneous, the relevant thermodynamic parameters were calculated. These parameters indicated that the adsorption process was spontaneous (negative ∆G°), endothermic (positive ∆H°), and accompanied by an increase in disorder (positive ∆S°). Finally, the possibility of recovering and reusing the synthesized adsorbent was investigated. The results showed that recovery and reuse were possible using an ethanolic solution of sodium hydroxide and dishwashing liquid.