Koibla Djimasta (1950 – January 30, 2007[1]) was a Chadian politician of Sara ethnicity[2] from the southern Chari-Baguirmi Prefecture.

[3] An administrator, Djimasta held various cabinet positions under Presidents Hissène Habré and Idriss Déby,[1] beginning with his appointment as Minister of Health and Social Affairs in the cabinet created by Habré on October 21, 1982, shortly after his rise to power.

[5][6] A shrewd politician,[2] Djimasta was appointed as Minister of the Interior on May 22, 1992,[7] serving in that position until 1993.

[1] He headed a commission, composed of representatives of the government, political parties, and civil society, that was responsible for preparing for the Sovereign National Conference; the commission was created by President Déby in November 1992, and its task included the selection of the Conference's delegates.

Déby had become wary of Prime Minister Delwa Kassiré Koumakoye due to the latter's evident presidential ambitions, moving him to search a more malleable Prime Minister, as Djimasta was effectively to prove himself.