The paper focuses on the seismic performance of the San Pietro dam (located in Southern Italy) evaluated, with different levels of accuracy, through pseudo-static, simplified-displacement and dynamic 2D finite difference analyses. For critical mechanisms, detected through pseudo-static analyses, simplified displacement analyses were performed assessing the horizontal and vertical components of the expected permanent displacements. Dynamic analyses were carried out accounting for non-linear soil behavior under cyclic loading. The adopted input motions consist of several sets of accelerograms selected, from a worldwide database, assuming as a reference the seismicity of the area where the dam is located. The results of the analyses show a satisfactory behavior of the dam for the selected input motions.