Sydapuram or Saidapuram is a village and mandal located in Nellore district, Andhra Pradesh, India.

Saidapuram is located at 14°10′00″N 79°44′00″E / 14.1667°N 79.7333°E / 14.1667; 79.7333. It has an average elevation of 23 meters (78 feet).