Ouhoumoudou Mahamadou shekarar (1954-) ɗan siyasan Nijar ne na Jam’iyyar Demokraɗiyya da Gurguzu ta Jamhuriyar Nijar wato (PNDS-Tarayya) wanda yake aiki a matsayin Firayim Ministan Nijar tun daga ranar 3 ga watan Afrilu shekarar 2021 . Mahamadou ya yi aiki a gwamnatin Nijar a matsayin Ministan Ma'adinai, Makamashi, da Masana'antu daga shekarar 1991 zuwa shekara ta 1993 da kuma Ministan Kuɗi daga watan Afrilun shekarar 2011 zuwa watan Afrilun shekarar 2012. Ya kasance Darakta a majalisar zartarwar shugaban ƙasa tun daga shekarar 2015. A cikin gwamnatin riƙon ƙwarya ta Firayim Minista Ahmadou Cheiffou, wanda aka naɗa a ranar 7 ga watan Nuwamba shekarar 1991, Mahamadou ya kasance Ministan Ma'adanai, Makamashi, Masana'antu, da kere-kere. An ci gaba da rike shi a mukaminsa a cikin garambawul a majalisar zartarwa a ranar 31 ga Janairun 1993. An gudanar da zabubbuka masu yawa a watan Fabrairun 1993, wanda ya kawo karshen mika mulki; Ba a saka Mahamadou cikin gwamnatin da aka nada a ranar 23 ga watan Afrilu shekarar 1993.