1930Colonial
Charles W. Duncan — Commissioner of Police
First Commissioner of the unified Nigeria Police Force, 1 April 1930.
British
The line of office
1930 — present19641st Republic
Louis Edet
First Nigerian Inspector-General of Police.
1964 — 1966
1966Military
Kam Selem
IGP through the civil-war years and the Gowon administration.
1966 — 1975
1975Military
Muhammadu Dikko Yusufu
IGP under Murtala/Obasanjo; later founded MORDI political movement; 1999 presidential aspirant.
1975 — 1979
19812nd Republic
Etim Inyang
IGP under Shagari. Removed shortly after the December 1983 coup.
1981 — 1986
1986Babangida
Muhammadu Gambo Jimeta
IGP through most of the IBB years.
1986 — 1990
19994th Republic
Musiliu Smith
First IGP of the Fourth Republic. Reinstated the National Honours of officers under Abacha.
1999 — 2002
2002Obasanjo II
Tafa Balogun
Convicted of money laundering and theft (FHC Abuja, 2005); plea bargain; ₦15bn forfeiture.
2002 — 2005
2008Yar'Adua
Mike Okiro
IGP under Yar'Adua. Later Chairman, Police Service Commission.
2007 — 2009
2010Jonathan
Hafiz Ringim
Conducted security around the 2011 elections; removed January 2012 over the Boko Haram HQ bombing.
2010 — 2012
2014Jonathan
Suleiman Abba
Removed 22 April 2015 by President-Elect Buhari ahead of the May 29 handover.
2014 — 2015
2015Buhari I
Solomon Arase
IGP under Buhari I; oversaw the Anti-Corruption Strategy roll-out of 2016.
2015 — 2016
2016Buhari I
Ibrahim Idris
IGP through the height of the SARS-reform debate; succeeded by Mohammed Adamu, January 2019.
2016 — 2019
2019Buhari II
Mohammed Adamu
IGP at the time of the End SARS protests of October 2020; SARS dissolved 11 October 2020.
2019 — 2021
2021Buhari II
Usman Baba Alkali
IGP through the 2023 general elections.
2021 — 2023
2023Tinubu
Kayode Egbetokun
21st substantive IGP. Tenure extension via amended Police Act 2024 — contested at the Federal High Court.
2023 — sitting
Methodology
Tier 1 · primary
Courts. Gazettes. National archives.
Tier 2 · corroborating
OCCRP. HRW. BudgIT. TheCable.
Redline
Wikipedia is never a source.