Ali Saibou ɗan siyasan Nijar ne. An haife shi a shekara ta 1940 a Dingajibanda, Yammacin Afirkan Faransa; ya mutu a shekara ta 2011 a Niamey, Nijar. Ali Saibou shugaban kasar Nijar ne daga Nuwamba 1987 zuwa Afrilu 1987 (bayan Seyni Kountché - kafin Mahamane Ousmane).