| "The Testament of Athammaus" | |
|---|---|
| Short story by Clark Ashton Smith | |
 Title page of "The Testament of Athammaus" as it appeared in Weird Tales, October 1932. Illustration by T. Wyatt Nelson. | |
| Country | United States |
| Language | English |
| Genre(s) | Fantasy |
| Publication | |
| Published in | Weird Tales |
| Publication type | Pulp magazine |
| Publisher | Popular Fiction Publishing Co. |
| Media type | |
| Publication date | October 1932 |
| Series | Hyperborean cycle |
"The Testament of Athammaus" is a short story by American writer Clark Ashton Smith, part of his Hyperborean cycle. It was published in the October 1932 issue of Weird Tales.