<p>Conducting one-dimensional nonlinear site response analysis is crucial for understanding how local soil conditions influence ground motion characteristics, thereby playing a vital role in accurate seismic hazard assessment. This study focuses on the nonlinear site response of Dhaka City, where rapid, unplanned urbanization, high population density, and the prevalence of vulnerable structures collectively exacerbate seismic risk. Soil shear wave velocity measurements, extending down to 300&#xa0;m, and the dynamic properties of two surface geological formations—Pleistocene and Holocene—sourced from secondary data, have been utilized for site response analysis. The DEEPSOIL program was used to analyze ground surface responses to earthquake time histories recorded at rock and soil stations in India. Both original time histories and those matched with the Uniform Hazard Spectrum (UHS) of Dhaka City were used to obtain more comparable results. Our findings reveal that the subsurface soil response spectrum typically shows de-amplification at short periods and amplification at longer periods. Additionally, an inverse relationship is observed between soil thickness and spectral response, with greater soil thickness associated with reduced response amplitudes. The comparison between the two geological units indicates that Pleistocene deposits generate higher acceleration responses for rock station data. In contrast, Holocene deposits exhibit higher acceleration at soil stations, characterized by elongated responses over long periods. This approach is vital for accurately estimating ground shaking levels in Dhaka, supporting safer building design and more effective emergency response planning.</p>