The structural and magnetic properties evolution of Cr-doped Bi2Sr2CaCu2−xCrxOy ceramics (x = 0.0, 0.05, 0.1, and 0.25) have been investigated using XRD, SEM, DC resistivity and M–H measurements. X-ray diffraction studies have shown that all samples are mainly composed of Bi-2212 phase, indicating that Cr can be incorporated in its crystal structure. The microstructure of the highly Cr-doped samples showed that some impurity phases appear, decreasing the conductivity between the grains. Tc (onset) and Tc (offset) have been improved for x = 0.05 Cr doping, while 0.25 Cr doped samples are not superconducting. This behavior can be associated to changes in the hole concentration and/or the magnetic nature of Cr. The magnetic properties indicate that low Cr-doping enhances the loop widths. Additionally, the critical current densities, Jc, of samples have been calculated by using the Bean’s critical state model. It has been found that there are important improvements in Jc values between 0.2 and 0.9 T applied magnetic fields for 0.05 Cr doped samples.