Synthesis and properties of new luminescent amphiphilic Tb(III) complexes [TbL 3 Á2H 2 O]Á3H 2 O, TbL 3 Ábipy, [H 3 O][TbL 4 ]Á6H 2 O and [H 3 O][TbL 0 3 L]ÁH 2 O, where HL is 1-phenyl-3-methyl-4-stearoylpyrazolone-5 and HL 0 is 1-phenyl-3-methyl-4-formylpyrazolone-5, are reported. The complexes have been characterized by elemental and thermal analysis, FTIR and luminescence spectroscopy methods. Formation and properties of Langmuir-Blodgett films of the complexes are described.