The seismic hazard study of Dehradun, the capital of Uttarakhand, India, with coordinates of 30.3634 N, 78.0663 E is presented in this work. For Uttarakhand, an updated earthquake library covering the years 1900 to 2018 has been created, which has been homogenized into a unified moment magnitude scale for an influence radius of 300 km. The catalogue was then declustered using Gardner and Knopoff approach to remove the aftershocks and foreshocks. The Seismotectonic maps of the region having the faults, thrust and lineaments is georeferenced with earthquake data using ArcGIS. The standard Cornell–McGuire approach with several source models is used to assess the hazard. The attenuation model is based on the National Disaster Management Authority's (NDMA) Ground Motion Prediction equation (GMPE). Using R-CRISIS and currently accessible data, the Probabilistic Seismic Hazard Analysis (PSHA) is done. For various return Periods, consistent hazard curves and maps were constructed, depicting the spatial variance of Peak Ground Acceleration (PGA) at the bedrock level.