A set of criteria for selecting accelerograms for seismic impact modeling for a time-history analysis of retaining walls is presented. Several accelerograms differing in peak ground acceleration, frequency content, duration, and other parameters have been analyzed and evaluated. The selection of appropriate accelerograms that can be used for the alternative modeling of the seismic impact within the FEM (finite element method) analysis of a part of a soil foundation with an adjacent retaining wall encompasses three consecutive steps: (1) definition of credible earthquake scenario; (2) compatibility verifications of the ground motion in time and frequency domain; (3) deconvolution of the selected free field accelerograms to the base of the FEM model. The study concerns the seismic behavior and response of retaining walls at sites within the city of Sofia. The deconvolution procedure is performed via one-dimensional wave propagation analysis using the ProShake software.