Ranks in Nigeria Police Force are structured to define roles, responsibilities, and powers at every level. This reflects the regimental nature of the police, ensuring an organized chain of command from the Inspector-General of Police (IGP) down to the rank of Constable. The ranking system plays a vital role in maintaining order, discipline, and efficiency within the police force. It also ensures that authority flows systematically across all ranks.

Police ranks in Nigeria, from top to bottom:

1. Inspector-General of Police (IGP)
2. Deputy Inspector-General of Police (DIG)
3. Assistant Inspector-General of Police (AIG)
4. Commissioner of Police (CP)
5. Deputy Commissioner of Police (DCP)
6. Assistant Commissioner of Police (ACP)
7. Chief Superintendent of Police (CSP)
8. Superintendent of Police (SP)
9. Deputy Superintendent of Police (DSP)
10. Assistant Superintendent of Police (ASP)
11. Inspector of Police (IP)
12. Sergent Major (SM)
13. Sergent
14. Corporal
15. Constable

Police ranks in Nigeria, from bottom to top:

1. Constable
2. Corporal
3. Sergent
4. Sergent Major (SM)
5. Inspector of Police (IP)
6. Assistant Superintendent of Police (ASP)
7. Deputy Superintendent of Police (DSP)
8. Superintendent of Police (SP)
9. Chief Superintendent of Police (CSP)
10. Assistant Commissioner of Police (ACP)
11. Deputy Commissioner of Police (DCP)
12. Commissioner of Police (CP)
13. Assistant Inspector-General of Police (AIG)
14. Deputy Inspector-General of Police (DIG)
15. Inspector-General of Police (IGP)

Symbols of police ranks in Nigeria: