We report what is believed to be the first resonantly pumped laser operation based on ${\mathrm{Er}}^{3+}$ -doped disordered double tungstate single crystal. Efficient laser operation of an ${\mathrm{Er}}^{3+}\text{:}\mathrm{NaY}({\mathrm{WO}}_4{)}_2$ laser at $\sim 1609.6\mathrm{nm}$ was demonstrated with the naturally wideband, $\sim 20\mathrm{nm}$ , InGaAsP/InP laser diode pumping at $\sim 1501\mathrm{nm}$ . Laser wavelength tunability of $\sim 34\mathrm{nm}$ was also demonstrated based on disorder-broadened emission features of ${\mathrm{Er}}^{3+}\text{:}\mathrm{NaY}({\mathrm{WO}}_4{)}_2$ single crystal.