The Guadalcanal honeyeater (Guadalcanaria inexpectata) is a species of bird in the family Meliphagidae.

[2] It is endemic to Guadalcanal in the Solomon Islands,[1] where it is found high in montane forest.

[1] It was first described in 1929 by Ernst Hartert from specimens collected by Rollo Beck and his wife in 1927.

On the side of the neck is a tuft of pointed golden-yellow feathers about 2 cm long.

[3] Immature birds appear similar to the adults but are smaller and less distinctly striated underneath.