Ali Saibou (17 June 1940 – 31 October 2011) was the third President of Niger from 1987 to 1993 succeeding the deceased military ruler Seyni Kountché.

He became interested in a military career early on, and attended the Saint-Louis preparatory school in Senegal from 1954, then joined the First Senegalese Tirailleurs Regiment.

As a reward he was promoted to major, appointed to the cabinet as minister of rural economy and the environment, and on 20 November 1974, made chief of staff.

In early 1990, unrest by students and a Tuareg assault on Tchintabaraden led to a National Conference of 1991 that ultimately dismantled one-party rule, leaving Saibou mostly ineffective.

However, later in the year the National Conference barred Saibou from running in the planned presidential election, and at another MNSD congress in November 1991 he was replaced as party leader by Mamadou Tandja.