James Madison Jr. (an haife shi a ranar 16 ga watan Maris, shekarar 1751 -ya mutu a ranar 28 ga watan Yuni shekarar 1836) shi ne Shugaban Amurka na huɗu. Ya kuma kasance mahimmi a rubutu kundin Tsarin Tsarin Mulkin Amurka kuma mai mallakar bayi tare da babban shuka . Madison shi ne mafi gajarta a Shugabannin ƙasa, mai tsayin 5 feet 4 inches (1.63 m) James Madison Jr. shine babban dan Col. James Madison Sr. da Nellie Conway Madison. Madison ya auri Dolley Todd (née Payne) a ranar 18 ga watan Afrilu, shekarar 1794. Madison ya fara aikinsa a majalisar dokokin jihar Virginia. Madison tya koyi abubuwa da yawa daga Thomas Jefferson . Madison yana son gwamnatin tarayya mai ƙarfi ta Amurka fiye da yadda ofungiyoyin edeungiyoyi suka bayar. Ya kasance memba na taron da ya kafa Tsarin Mulkin Amurka na yanzu. Ana kiran Madison "Uba na Tsarin Mulki" saboda ya taimaka wajen rubuta babban ɓangarensa kuma ya rinjayi mutane cewa yana da kyau. An zabi Madison zuwa Majalisar Wakilan Amurka . Madison ya taimaka wajen rubuta dokokin farko na Amurka.