Aikea-Guinea is a March 1985 7" single and 12" EP by Scottish dream pop band Cocteau Twins, released on 4AD.

Aikea-Guinea was included as a bonus with some Canadian pressings of Treasure.

On the 7", the song "Kookaburra" has a short percussive introduction that is not present on the EP.

The EP was reissued in 1991 as part of The Box Set and again in 2005 as part of the Lullabies to Violaine compilation, this time with a remixed "alternate" version of the title track.

According to Robin Guthrie, the word "aikea-guinea" is a Scottish colloquialism for a seashell.