Luminescence in Na₅Y(WO_4)₄ : Nd³⁺ is investigated for the first time. The emission is in the near-infrared region. The well-known ^4F_3/2->^4I_9/2 transition leads to most intense line at 1069 nm. The excitation and emission spectra are interpreted using the energy level diagram of Nd³⁺. The excitation spectrum is made up of a large number of sharp lines attributable to various f-f transitions. A weak band at 360 nm in the excitation spectrum is assigned to the host. Notwithstanding large Y-Y distances, the luminescence is quenched at concentrations exceeding 2 mol.%. The critical distance for energy transfer among Nd³⁺ ions is found to be 32.85 Angstrem. Keywords: luminescence, phosphor, tungstate, Nd³⁺.

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