Alhaji Aliyu Ocheja Obaje (born 1920 - died July 16, 2012 ) was the paramount ruler of the Igala Kingdom in Nigeria.
Born in 1920, Aliyu Obaje was the youngest person to be installed as Attah Igala; he mounted the stool at the age of 36 on October 20, 1956 following the death of his predecessor Ameh Oboni. He held the title of Attah, Igala. Tha Attah's palace (the seat of power in the Igala Kingdom) is located in the ancient city Idah. He was one of the longest-serving monarch in Nigeria. He has conferred on a large population of the Igala people traditional chieftaincy titles, including the title of Agenyi-Attah of Igala Kingdom, bestowed on Chief Ogwu J. Onoja, SAN.
Aliyu Obaje was the chairman of the Kogi State council of Traditional chiefs. He held the Nigerian national honour of GCFR (Grand Commander of the Federal Republic).
He died on July 16, 2012.