| Dayworld Breakup | |
| Author: | Philip José Farmer |
| Cover Artist: | Vincent Di Fate |
| Country: | United States |
| Language: | English |
| Series: | Dayworld |
| Genre: | Science fiction |
| Publisher: | Tor[1] |
| Release Date: | 1990 |
| Media Type: | Print (Hardback & Paperback) |
| Pages: | 324 (paperback edition) |
| Isbn: | 0-312-85035-2 |
| Isbn Note: | (paperback edition) |
| Oclc: | 24246420 |
| Preceded By: | Dayworld Rebel |
Dayworld Breakup is a 1990 science fiction novel by American writer Philip José Farmer, the last book in the Dayworld Trilogy.[2] [3]