The Anziku Kingdom, also called the Teke Kingdom, the Tyo Kingdom or Tio Kingdom, was a pre-colonial West Central African state of modern Republic of Congo.
The word Anziku comes from the KiKongo phrase "Anziku Nziku" meaning "to run" referring to inhabitants who leave the interior to protect the border. The term was applied most famously to the Bateke, which is why the state is sometimes called the kingdom of Teke or Tiyo. Other groups within the Anziku included the Bampunu and Banzabi.
In the early 17th century, the Anziku population controlled the copper mines around Kongo's northeast border and may have been there specifically as a buffer. When the Anziku groups consolidated to form their own independent kingdom, Kongo proceeded to take over the mines personally. This process was complete by the 1620s. There was, however, fighting between the two states over the region throughout the 17th century.
The kingdom was centered on the Congo River around the Pool Malebo. It also controlled land directly north of that placing closer to the interior of its better known contemporaries such as Kongo and Loango. The BaTeke people, who dominated the kingdom, lived on the plateaus of the region from early times. By 1600, Anziku controlled the lower Congo River and extended northwest to the upper Kouilou-Niari basin.
Fairly little is known about the kingdom or how it operated. What is known is that it was ruled by a king called a makoko. This led to the state sometimes being labeled "Great Makoko" on European maps. The capital was called Monsol. According to the account of one of the few visitors, the makoko ruled over 13 vassal kings.
The Anziku kingdom manufactured and sold fabrics made of leaves, which doubled as currency throughout the region. Their position closer to the interior also made ivory accessible. Along with these products, the Anziku sold slaves which they brought to the coast in return for cowries, salt, silk, linen and glass. The area was also rich in metals particularly copper. This led to conflict between Anziku and its southern neighbor Kongo.