Delhi  the  capital  of  India  is  a  burgeoning  metropolis  having  a  population  of  some  twelve  million  people.  The city has experienced earthquakes in the past and is vulnerable for earthquake related damages in the future.  There  are  nearby  diffuse  seismic  sources  known  for  their  sporadic  activity.  In  addition,  the  threat  perception  is  highlighted  by  the  proximity  of  the  active  Himalayan  plate  boundary  region.  Thus,  seismic  hazard at Delhi is controlled broadly by two different tectonic regimes namely, the Himalayan region (HR) and the Delhi region (DR). The present study aims at mapping the peak ground acceleration (PGA) values for  Delhi  city,  using  probabilistic  seismic  hazard  analysis  (PSHA)  methods.  Twenty  potential  faults,  in  a  region  of  300  km  radius  around  Delhi,  are  identified.  Recurrence  relationships  for  the  two  controlling  regions  are  established  with  the  help  of  past  (1720-2001A.D.)  data.  Regional  attenuation  relationship  is  developed using strong motion data recorded on rock sites. PSHA is performed for a 40km x 30km region encompassing Delhi and a microzonation map is prepared for PGA value, at a probability exceedance level of 2 percent in a period of 50 years, computed at 1200 grid points at 1km x 1km interval. Disaggregation of hazard  in  terms  of  magnitude  and  source  to  site  distance  has  also  been  carried  out.  This  shows  that  moderate local earthquakes contribute significantly, rather than the long distance Himalayan events, to the hazard in the city. The city has considerable variation in the soil layering and bed rock profile, which may cause  large  variation  of  surface  level  ground  motion.  Soil  amplification  studies  are  carried  out  at  several  representative sites to understand how the rock level PGA value gets altered at the surface level in the city.