Crystals of NaTbF solid solution with a fluorite structure have been grown from melt by the Bridgman technique. The measured values of the Verdet constant are V = 0.35 ± 0.02 and 0.105 ± 0.01 arcmin/(Oe cm) for λ = 633 and 1060 nm, respectively. The dispersion of the Verdet constant is studied in the range of 380-1060 nm. The NaTbF crystal is somewhat inferior to the previously studied noncubic fluoride crystals containing Tb ions yields by V(λ) and is close to KTbF crystal in totality of properties.