The magnetization characteristics of a nickel thin film deposited onto a glass substrate with oblique incidence are studied by the measurement of its extraordinary Hall effect (spin Hall effect). The results show that the Hall loop which corresponds to theM‐Hloop is anisotropic with respect to the direction of the applied field, and that the loop varies from normal type to anomalous type reversibly with the angle between the applied fieldHand the film normal in a plane containing both the film normal and the easy axis.