Koilaletoi (Greek: Κοιλαλέτοι) or Coilaletae or Coelaletae is the name of a Thracian tribe. Other parts of this tribe were, the Coelaletae Maiores and Coelaletae Minores. They are mentioned by Tacitus.
- The Cambridge Ancient History, Volume 3, Part 2: The Assyrian and Babylonian Empires and Other States of the Near East, from the Eighth to the Sixth Centuries BC by John Boardman, I. E. S. Edwards, E. Sollberger, and N. G. L. Hammond, ISBN 0-521-22717-8, 1992, page 606: "The other branch of this tribe, the Coelaletae maiores, lived in the region of the High Tonzos between Stara ..."
- Cornelius Tacitus, The Annals