Mai Martaba Aliyu Ocheja Obaje (1920 - 16 ga Yuli, 2012) shi ne Sarki na 26 na Attah Igala (babban mai mulki) na Masarautar Igala a Nijeriya. Obaje ya kwashe shekaru 56 yana sarauta wanda hakan yasa ya zama daya daga cikin masu dadewa a harkar sarauta a tarihin Najeriya An haife shi a 1920, Aliyu Obaje shi ne mafi ƙanƙancin mutum da aka nada a matsayin Attah Igala; ya hau kan kujera yana da shekara 36 a ranar 2 ga Nuwamba, 1956 bayan rasuwar magabacinsa Ameh Oboni. Obaje ya yi mulki na shekaru 52 kafin ya mutu yana da shekara 102. Fadar Masarautar Attah (wurin zama na mulki a Masarautar Igala) tana cikin tsohuwar garin Idah. Ya kasance daya daga cikin masarautu mafi dadewa a Najeriya. Ya ba da yawan jama'a na masarautun gargajiya na kabilar Igala, ciki har da lakabin Agenyi-Attah na masarautar Igala, wanda aka bai wa Cif Ogwu J. Onoja, SAN. Aliyu Obaje shi ne shugaban majalisar sarakunan gargajiya ta jihar Kogi.