| Bill Bergson, Master Detective | |
| Author: | Astrid Lindgren |
| Title Orig: | Mästerdetektiven Blomkvist |
| Translator: | Herbert Antoine |
| Illustrator: | Louis S. Glanzman |
| Country: | Sweden |
| Language: | Swedish |
| Series: | Bill Bergson |
| Genre: | Children's literature |
| Publisher: | Rabén & Sjögren |
| Pub Date: | 1946 |
| English Pub Date: | 1952 |
| Media Type: | |
| Pages: | 200 pp |
| Oclc: | 186744453 |
| Followed By: | Bill Bergson Lives Dangerously |
Bill Bergson, Master Detective (original Swedish title Mästerdetektiven Blomkvist) is a children's novel by Astrid Lindgren. It is the first in the series about the Swedish boy detective, in English translation named Bill Bergson (Swedish name: Kalle Blomkvist).
Bill Bergson investigates his friend's mysterious cousin, who is behaving suspiciously, and solves the mystery of a jewel robbery.
Bill and five of his friends also play a mock war game, with the White Roses and the Red Roses vying for possession of an unusual stone.
There is a film based on the book, Bill Bergson, Master Detective, produced in 1947.