The full forms for these ranks in the Indian police system are:

• DGP – Director General of Police: The highest-ranking police officer in a state or union territory.
• DSP – Deputy Superintendent of Police: A senior police officer who assists the Superintendent of Police and manages authorized police stations.
• SP – Superintendent of Police: Heads all the constables and police officers of a district (non-metropolitan or urban).
• ASP – Assistant Superintendent of Police:
  • For IPS officers: Their starting rank, considered a probationary period until their second year.
  • For State Police Services officers: A rank they can hold after DSP.
• ACP – Assistant Commissioner of Police: A high-ranking police officer, typically in charge of a police subdivision in a city.