Krummbek Manor (German: Herrenhaus Krummbek) is a manor house in the municipality of Lasbek. It is a listed historical monument.

In the late Middle Ages Krummbek, for the first time documented in 1327, was a farming village belonging to the abbey of Reinfeld. Later it was affiliated as a Meierhof to Schulenburg Manor (Gut Schulenburg). As such it was owned by the famous Marshal of France Count Nicolas Luckner (1722–1794), the great-grandfather of the not less famous navy officer and war hero Count Felix Luckner. When Count Nicolas Luckner was beheaded at the age of 72 during the Reign of Terror under the guillotine in Paris, Schulenburg manor including Krummbek passed to his son. Krummbek as an autonomous manor was created when count Luckner split it in 1803 from Schulenburg Manor. Its first owner was Baron Ludwig Carl Christoph von Liliencron (1777–1846), married to Countess Juliane von Luckner (1788–1863), who was an officer in the Napoleonic Wars. He had the manor house in 1803 erected by Christian Frederik Hansen in the neoclassical style. Later Krummbek came into the ownership of Hamburg merchants, thereunder Robert Jauch (1856–1909) of the Jauch family. 1885 when he was Lord of Krummbek it had 67 inhabitants. Both, his son the Freikorps leader whilst the German revolution Colonel Hans Jauch (1883–1965) and his daughter Luise Jauch (1885–1933) have grown up at Krummbek. Luise Jauch was head nurse at The Magic Mountain at Davos, the second famous novel of Thomas Mann, when his wife Katia Mann stood there 1912. Luise Jauch's traits have been utilized by Mann for the novel's head nurse Adritacia von Mylendonk. 1909 Krummbek was bought by the Lampe family.

1928 Krummbek was incorporated into the village of Barkhorst and 1974 it became a district of the municipality of Lasbek.