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In this work, the photocatalytic performance of Ag₃PO₄, Nb₂O₅ and Ag₃PO₄/Nb₂O₅ hybrid photocatalysts to degrade methyl orange dye, MO, in an aqueous solution under visible light irradiation was evaluated. The Ag₃PO₄ and Ag₃PO₄/Nb₂O₅ photocatalysts, with various Ag to Nb molar ratios, were prepared using a facile precipitation method. The photocatalysts were characterized by X-ray diffraction, UV–Visible, X-ray Photoelectron, and Photoluminescence spectroscopies. Upon the addition of Ag₃PO₄, the band gap energy of Nb₂O₅ decreased from 3.0 eV to 2.7 eV, indicating the possible use of the Ag₃PO₄/Nb₂O₅ hybrid photocatalysts under visible light irradiation. All of the prepared Ag₃PO₄/Nb₂O₅ catalysts exhibited higher photocatalytic performance than Ag₃PO₄ in degrading methyl orange dye under 23-watt visible light irradiation. The Ag₃PO₄/Nb₂O₅ catalyst, with a mole ratio of 2:1, exhibited the fastest MO degradation rate of 7.3 × 10⁻² min⁻¹, which is twice faster than that of Ag₃PO₄. The catalyst also shows better stability, as it is reusable for up to six experimental cycles while maintaining its photocatalytic activity above 60%.