The Civil Services (Preliminary) Examination – 2011 was a competitive examination conducted by the Union Public Service Commission (UPSC) for Indian students aspiring to join the civil services. It served as the first stage of the selection process for various administrative positions in the Government of India. The examination assessed candidates' knowledge on subjects such as history, geography, polity, economy, and general science.

Candidates must hold a degree from a recognized university or an equivalent qualification. Those appearing in their final year degree examination were also eligible, provided they submit proof of passing the examination at the time of the main examination. There were no specific marks or income criteria, but age limits and number of attempts varied by category as per UPSC guidelines.

Eligible candidates had to apply online through the official UPSC website. The application process involved filling out personal details, educational qualifications, and uploading necessary documents. Candidates also had to pay the prescribed application fee, if applicable, and submit the form before the deadline mentioned in the official notification.