Abdullahi Mohammed
| Abdullahi Mohammed Adangba | |
|---|---|
| Chief of Staff to the President | |
| In office 29 May 1999 – 2 June 2008 | |
| President | Olusegun Obasanjo Umaru Musa Yar'Adua | 
| Preceded by | Position established | 
| Succeeded by | Gbolade Osinowo | 
| National Security Adviser | |
| In office June 1998 – May 1999 | |
| President | Abdulsalami Abubakar | 
| Preceded by | Ismaila Gwarzo | 
| Succeeded by | Aliyu Mohammed Gusau | 
| Director of the National Security Organisation | |
| In office March 1976 – October 1979 | |
| President | Olusegun Obasanjo | 
| Preceded by | Position established | 
| Succeeded by | Umaru Shinkafi | 
| Governor of Benue-Plateau State | |
| In office July 1975 – March 1976 | |
| President | Murtala Mohammed | 
| Preceded by | Joseph Gomwalk | 
| Succeeded by | Abdullahi Shelleng (Benue) Dan Suleiman (Plateau) | 
| Personal details | |
| Born | 1939 (age 85–86) Ilorin, Northern Region, British Nigeria (now Illorin, Nigeria) | 
| Alma mater | Royal Military Academy, Sandhurst | 
| Military service | |
| Allegiance | Nigeria | 
| Branch/service | Nigerian Army | 
| Years of service | 1958–1979 | 
| Rank | Major general | 
Abdullahi Mohammed is a retired Nigerian Army major general who served as chief of staff to presidents Olusegun Obasanjo and Umaru Musa Yar'Adua from 1999 to 2008; National Security Adviser to General Abdusalami Abubakar from 1998 to 1999; Director General of the National Security Organisation from 1976 to 1979; and Governor of Benue-Plateau State, Nigeria, from July 1975 to February 1976 during the military regime of General Murtala Mohammed.