| Knock-Out | |
| Author: | H. C. McNeile (as Sapper) |
| Country: | United Kingdom |
| Language: | English |
| Genre: | Crime fiction |
| Publisher: | Hodder & Stoughton |
| Pub Date: | 1933 |
| Media Type: | Print (Hardcover) |
| Pages: | 317pp |
| Oclc: | 54391529 |
Knock-Out was the eighth Bulldog Drummond novel. It was published in 1932 and written by H. C. McNeile under the pen name Sapper. It was adapted into the film Bulldog Drummond Strikes Back.