The Dark Heart of Time
| Author | Philip José Farmer |
|---|---|
| Original title | Tarzan's Greatest Secret |
| Language | English |
| Series | Tarzan series |
| Genre | Adventure |
| Publisher | Del Rey |
Publication date | 1999 (paperback) 2018 (hardcover) 2018 (trade paperback) |
| Publication place | United States |
| Media type | Print (paperback) |
| Pages | 278 |
| ISBN | 0-345-42463-8 |
| Preceded by | Tarzan: The Epic Adventures (1996) |
| Followed by | The Adventures of Tarzan (2006) |
The Dark Heart of Time: A Tarzan novel is a novel by American writer Philip José Farmer, authorized by Edgar Rice Burroughs, Inc. Published in 1999, the book was first announced under the title Tarzan's Greatest Secret in 1997. A 2018 reissue of the novel marked the book's first hardcover edition, and was retitled Tarzan and the Dark Heart of Time.