Single crystals of K5Bi0.9Nd0.1 (MoO4)4 and K5Bi0.97Nd0.03(MoO4)4 were grown from sto-ichiometric melts by the usual Czochralski technique. The crystal (Nd = 0.1) belongs to trigonal system, with space group R3m, Z = 1.5, and cell parameters a = 6.023 ?, c=20.887?.The room temperature absorption spectra of K,Bi(MoO4)4-Nd3+(3 % or 10 % Nd3+) consist of several bands characteristic of the rare earth Nd ions in crystals. The substitution of Nd3+ by Bi3+ does not affect the surrounding of the active ions. Details of room temperature emission spectra corresponding to the 4F3/2→4I13/2 and 4F3/2→4I11/2 transitions are also given.