Magnetometry measurements performed on TbMnO $$_{3}$$ 3 films grown onto single-crystal [001] SrTiO $$_{3}$$ 3 substrates using magnetron sputtering technique exhibit series of anomalies related to the magnetic ordering of the Mn $$^{3+}$$ 3 + sublattice. Despite the fact that bulk TbMnO $$_{3}$$ 3 is a low-temperature antiferromagnet, the measurements indicate the presence of high-temperature ferromagnetism. Well-defined hysteresis loops are observed at temperatures as high as 70 K. Analysis of the X-ray diffraction patterns of the target and films shows no evidence of affectation (within the resolution limit of the technique) by external impurities, such as Mn $$_{3}$$ 3 O $$_{4}$$ 4 , which might give rise to an artificial magnetic signal. Thus, it is probable that the ferromagnetism observed in the films to be an intrinsic property of TbMnO $$_{3}$$ 3 . Concretely, it is possible that the strain imposed by the substrate, resulting in the tetragonally distorted orthorhombic phase of the TbMnO $$_{3}$$ 3 films, is behind the mechanism governing the anomalous ferromagnetism observed in the films.