| The Cat Who Played Post Office | |
| Author: | Lilian Jackson Braun |
| Country: | United States |
| Language: | English |
| Series: | The Cat Who series |
| Genre: | Mystery |
| Publisher: | Jove |
| Release Date: | 1987 |
| Media Type: | Print (hardback & paperback) |
| Isbn: | 0-515-09320-3 |
| Oclc: | 17197171 |
| Preceded By: | The Cat Who Played Brahms |
| Followed By: | The Cat Who Knew Shakespeare |
The Cat Who Played Post Office is the sixth book in The Cat Who series, published in 1987. Jim Qwilleran has acquired a large mansion, from Aunt Fanny, and of course a mystery. Iris Cobb joins him in Pickax as the mansion's caretaker, along with Koko and Yum Yum. Koko keeps trying to tell Qwill something about the missing housemaid, Daisy Mull.