Traditional Rulers — pre-colonial polities (pre-1879)#
Imo groups the Owerri, Mbaise, Mbano, Orlu, Okigwe, Oguta, Ohaji-Egbema, Oru and Ngor-Okpala Igbo clans — historically acephalous lineage republics governed by *Ozo* and *Nze na Ozo* title societies, *Umuada* (married daughters) assemblies, and oracular shrines. The Mbari art-houses of Owerri (mud-and-clay shrine sculptures to Ala the earth-goddess) are the most distinctive material culture. Eze kingships were institutionalised mainly under colonial warrant-chief reform; pre-1900 spiritual authority lay with Eze-Nri (Nri-Awka in Anambra) whose ritual primacy extended across northern Imo. The Arochukwu Long-Juju slave-network drew captives through Imo from c. 1690 to its destruction in the Aro Expedition (1901–02). The 1929 Aba Women's War detonated in Owerri Province (Oloko, Aba, Owerrinta). Chairman, Imo Council of Traditional Rulers: HRM Eze Samuel Ohiri.
Colonial era (1900–1960)#
Territory entered Southern Protectorate after the Aro Expedition (1902) and the Owerri suppression (1905). Sat in Owerri Province of the Eastern Region (1939–67). Warrant-chief revolts (1925, 1929) and the Mary Slessor / Holy Ghost Fathers mission expansion shaped the era.
Eastern Region Premiers (1954–1966)#
- 1954–1959 — Dr. Nnamdi Azikiwe (NCNC).
- 1959–1966 — Dr. Michael Okpara (NCNC).
East-Central State (1967–1976) — parent state#
- 1967–1971 — Sir Francis Akanu Ibiam (Civilian Administrator).
- 1970–1975 — Ukpabi Asika (Administrator, East-Central).
- 1975–1976 — Col. Anthony Aboki Ochefu.
Imo State military Governors (1976–1979)#
Imo created 3 February 1976 by Murtala from East-Central (capital Owerri); Abia later excised 27 August 1991. • 1976–1977 — Cdre. Godwin Ndubuisi Kanu (founding Military Governor; later Aug 1985 IBB-coup co-conspirator). • 1977–1978 — Col. Adekunle Lawal. • 1978–1979 — Col. Sunday Adenihun.
Second Republic civilian Governor (1979–1983)#
- 1979–1983 — Chief Sam Mbakwe (NPP) — the "Weeping Governor"; built the Imo Airport (Owerri) and Imo Hotels without federal NPN-controlled funds.
Military II (1984–1992)#
- 1984–1985 — Cdre. Ike Nwachukwu (later Foreign Minister 1990–93).
- 1985–1986 — Col. Charles Adisa.
- 1986–1988 — Col. Allison Madueke.
- 1988–1990 — Col. Amadi Ikwechegh.
- 1990–1992 — Col. Anthony Oguguo.
Third Republic civilian Governor (1992–1993)#
- 1992–1993 — Chief Evan(s) Enwerem (NRC) — later first Senate President of the Fourth Republic (1999), impeached November 1999.
Imo State military Administrators (1993–1999)#
- 1993–1996 — Lt. Col. Tanko Zubairu.
- 1996–1998 — Cdre. James Aneke.
- 1998–1999 — Cdr. Tanimu Yakubu.
Fourth Republic civilian Governors & Deputies (1999–present)#
| Tenure | Governor | Deputy | Party | Notes | |---|---|---|---|---| | 1999–2007 | Achike Udenwa | Ebere Udeagu | PDP | Two terms; later Minister of Commerce. | | 2007 (Apr–Jun) | Ikedi Ohakim sworn in then unseated; Court of Appeal nullified election | — | PPA | Brief. | | 14 May 2007 – 28 Aug 2007 | Ada Okwuonu (Acting) | — | — | Court-ordered acting Governor. | | 2007–2011 | Ikedi Ohakim | Ada Okwuonu | PPA | Re-run election; the "Clean and Green" Governor. | | 2011–2019 | Owelle Rochas Okorocha | Sir Jude Agbaso (impeached 2013) / Eze Madumere (later impeached 2018) | APGA / APC | Two terms; "free education / Rescue Mission"; statue-building (Zuma, Zuma) infamous. | | 2019 (Jan) – 14 Jan 2020 | Emeka Ihedioha | Gerald Irona | PDP | Sworn in 29 May 2019; sacked by Supreme Court 14 Jan 2020 in *Uzodinma v Ihedioha* — most controversial Fourth-Republic judgment, declaring 4th-place APC candidate the winner. | | 14 Jan 2020 – present | Hope Uzodinma | Placid Njoku (2020–23) / Lady Chinyere Ekomaru (2023–) | APC | Re-elected November 2023; security situation: 14+ police-station attacks attributed to IPOB/ESN 2020–24. |
Sources & gaps#
Afigbo, *The Warrant Chiefs* (1972); Onwumechili, *Igbo Enwe Eze*; *Uzodinma v Ihedioha* (SC 2020, the "Imo judgment"); NPC East-Central/Imo gazettes; INEC 1999–2023.