Blue moki (Latridopsis ciliaris) is a species of marine ray finned fish belonging to the family Latridae, the trumpeters. It is native to the southwestern Pacific Ocean around New Zealand and occasionally off southeastern Australia at depths of 10 metres (33 ft) and greater. Juveniles inhabit inshore waters, preferring rocky reefs while adults mostly occur in offshore waters forming schools over open bottoms. Some solitary adults can be found on reefs. This species can reach a length of 80 centimetres (31 in) FL, though most do not exceed 63 centimetres (25 in) TL. This species is commercially important and is also popular as a game fish.

Despite the similarities in their common names, the blue moki are not closely related to the red moki, (Cheilodactylus spectabilis), a species in the genus Cheilodactylus, which is also known by the alternative common name of "banded morwong".

Blue moki in New Zealand occur throughout mainland waters from the Three Kings Islands to the southern edge of the Snares Shelf, and at the Chatham Islands. A single record of blue moki from the southern end of the Kermadec Island chain was reported, but this requires verification; it is not known if the species occurs elsewhere in the Kermadecs. Blue moki are also found in small numbers at the Auckland Islands.