Below is the list of all the former Heads of State and Presidents of Nigeria since 1960 when the country became independent and 1963 when the country became a Federal Republic.

Monarch 

Elizabeth II: 1960-1963 (Queen of Nigeria)

First Republic

Nnamdi Azikiwe: 1963-1966 (President)

Military Rule

Johnson Aguiyi-Ironsi: 1966 (Head of State, January 16 - July 29)

Yakubu Gowon: 1966-1975 (Head of State, August 1 - July 29)

Murtala Mohammed: 1975-1976 (Head of State, July 29 - February 13)

Olusegun Obasanjo: 1976-1979 (Head of State, February 13 - October 1)

Muhammadu Buhari: 1983-1985 (Head of State, December 31 - August 27)

Ibrahim Babangida: 1985-1993 (President, August 27 - August 26)

Ernest Shonekan: 1993 (Interim President)

Sani Abacha: 1993-1998 (Head of State)

Abdulsalami Abubakar: 1998-1999 (Head of State)

Fourth Republic

Olusegun Obasanjo: 1999-2007 (President, May 29 - May 29)

Umaru Musa Yar'Adua: 2007-2010 (President, May 29 - May 5)

Goodluck Jonathan: 2010-2015 (President, May 5 - May 29)

Muhammadu Buhari: 2015-2023 (President, May 29 - May 29) 

Bola Ahmed Tinubu: 2023 - to date.