| Incest | |
| Director: | James Bauer |
| Producer: | Josef Hahn |
| Studio: | Ines Internationale Spielfilm |
| Distributor: | Biograph-Film |
| Runtime: | 81 minutes |
| Country: | Germany |
Incest (German: '''ยง 173 St.G. B. Blutschande''') is a 1929 German silent drama film directed by James Bauer and starring Walter Rilla, Erna Morena, and Olga Chekhova. It was shot at the Staaken Studios in Berlin. The film's sets were designed by the art director Max Heilbronner.
Gardener Martin Hollman meets Lisbeth his much older wife Hedwig's daughter from her first marriage. She becomes his housekeeper and the two fall in love and when she falls pregnant go to get married. At the registry office they are informed that under the criminal code they are considered to have committed incest.