Abstract: In this work, structural and magnetic data of Y (x) Gd1-xIn3 (0 < x < 0.5) single crystals grown from an In flux are reported. X-ray diffraction measurements carried out at room temperature reveal that all samples belong to cubic global symmetry (space group: Pm3m). Besides, the increasing of yttrium concentration produces a decreasing in the lattice parameter. The T-dependence of the magnetic susceptibility shows a peak which is related with the onset of an antiferromagnetic ordering. We believe that yttrium substitution must be decreasing the strength of interaction among magnetic moments of Gd displacing the magnetic transition into to low temperature region. Finally, MvsH loops measured at 2 K are almost linear independently of yttrium concentration Ver menos