The Great Old Ones
| Publisher | Chaosium, Inc. |
| Editor | Lynn Willis |
| Introduction by | E.C. Fallworth |
| Artist | Tom Sullivan, Greg Stafford, John B. Monroe, Sean Schoonmaker |
| Copy Editor | Anne Merritt |
| Format | Soft cover |
| Language | English |
| Location | Albany, CA |
| Copyright | 1989 |
| Pages / Font | 172 pages |
| ISBN | 0-933635-38-9 |
| ISBN 13 | 978-0-933635-38-8 |
| Catalog Number | Chaosium Publication 2321 |
| Chapters | The Spawn Still Waters Tell Me, Have You Seen The Yellow Sign? One In Darkness The Pale God Bad Moon Rising |
| Notes | A supplement for Call Of Cthulhu role-playing game (3rd edition). 1st Edition. |
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