Kuji (fl. 4th century BC) was a ruler and eristavi of Colchis. During his reign his castle of Nokalakevi was built. Kuji aided Pharnavaz I of Iberia against the tyrannical ruler Azo. Pharnavaz subsequently deposed and killed Azo and Kuji recognized his authority giving him the Colchian throne.
According to The Georgian Chronicles:
Kuji eventually married Pharnavaz's sister. This marriage would produce the progeny of Kartam of Colchis.