King Jaja of Opobo (Jubo Jubogha; 1821–1891) was the first king (amanyanabo) of Opobo. He was also the founder of Opobo city-state in present-day Rivers State of Nigeria.

He was a prominent African leader and ruler of the Opobo Kingdom in what is now Nigeria . Jaja was kidnapped from Igboland by black slave raiders and sold into slavery. He was then brought to Ijawland thereafter.
As was customary among the Ijaw, Jaja earned his way out of slavery after serving his master for a number of years.

At the death of his master, he took charge of the trade and went on to head the Anna Pepple House merchant faction of Bonny. Under him, Anna Pepple absorbed other trade houses until a war with the Manilla Pepple House led by Oko Jumbo compelled Jaja to break away to form the Opobo city-state (26 miles east of Bonny) in 1869.

During the late 19th century. His reign and legacy are notable for his role in resisting European colonisation and his efforts to maintain the autonomy and independence of his kingdom.
Jaja eventually broke away from Bonny and founded his own city-state, Opobo, in 1870. Opobo became a major trading center in the Niger Delta region, and Jaja established a monopoly on palm oil exports, which was a valuable commodity at the time.

As the British Empire expanded its colonial interests in the Niger Delta, there were clashes between British interests and the indigenous rulers.
Jaja was a key figure in resisting British encroachment into his kingdom. He refused to allow the British to establish their own trading posts and tried to maintain control over trade in the region.
In 1887, the British launched a military expedition against Opobo. King Jaja was captured, tried, and exiled to the West Indies, where he died in 1891. The British dismantled the power and autonomy of Opobo and incorporated it into their colonial administration.

King Jaja is remembered for his resistance to colonial rule and his efforts to maintain the sovereignty of his kingdom. He is often seen as a symbol of resistance to European imperialism in Africa.
King Jaja of Opobo’s legacy is celebrated in Nigeria, particularly among the Ijo people and in the Niger Delta region. He is remembered as a heroic figure who stood up against colonial oppression and defended the interests of his people.