Babatunde "Tunde" Abdulbaki Idiagbon (Listenⓘ) (14 September 1943 – 24 March 1999) was a Nigerian general who served as the 6th Chief of Staff, Supreme Headquarters (second-in-command) under military head of state General Muhammadu Buhari from 1983 to 1985.

He fought in the Nigerian Civil War and was made commanding officer, 20 Battalion from October 1967 to February 1968.

In 1976, Idiagbon proceeded to the Command and Staff College in Quetta, Pakistan, for further military training.

[4] General Muhammadu Buhari made Idiagbon his second-in-command as Chief of Staff, Supreme Headquarters from 31 December 1983 to 27 August 1985.

He said any corporation or individual exchanging in excess of the limit had to explain where the money came from and needed government clearance.

[7] In 1984, Idiagbon implemented the military government's import substitution industrialisation policy based on the use of local materials.

Also in 1984, Idiagbon spearheaded and implemented the Go Back to Land Programme which was part of the government's farming policy that encouraged massive agricultural food production and was also part of the military government's poverty alleviation strategy.

[8] From January 1984 to August 1985, Idiagbon took control of all foreign policy matters that involved security.

On behalf of Nigeria's military government, he signed credit line and educational cooperation agreements with a visiting Bulgarian delegation led by Prime Minister Grisha Filipov in 1984.

[9] After 20 months in power, the military government of Buhari was overthrown by Ibrahim Babangida on 27 August 1985.

[10] Idiagbon was removed from his position as chief of staff, Supreme Headquarters, and he was placed under house arrest for three years, after his release he retired to his hometown Ilorin and lived in relative obscurity.