Manor in Łomnica, Manor from Polish cultural heritage register in Łomnica, Poland.

The Manor in Łomnica, known as the Widow's House, is a two-storey rectangular building erected in 1804, with a hipped roof and dormer windows. Inside, the ground-floor hall has cross-vaulting on pillars, and the great hall retains an early 19th-century architectural wall polychrome, cleaned and partly reconstructed in 1996–1997.

The manor was built in 1803–1804 by Christian Gottfried Mentzel next to the Łomnica Palace. It was altered in the 20th century and underwent a full renovation between 1995 and 1998. It is listed on the Polish cultural heritage register and now houses a hotel, restaurant and café.

The name "Dom wdowy" (Widow's House) is the manor's popular designation. Since its restoration the building has housed a hotel, a restaurant and a café, and it serves as the seat of the Dominium Łomnica Foundation, which works to protect the heritage of the Jelenia Góra Valley Cultural Park. The manor forms part of a palace complex with Schloss Lomnitz and its park.

The manor stands at 3 Karpnicka Street in Łomnica, within the palace complex that also includes the Schloss Lomnitz palace and its park. It now operates as a hotel, restaurant and café, so visitors can enter during business hours rather than viewing only from outside. The building is also the seat of the Dominium Łomnica Foundation.

The manor's name, "Dom wdowy" (Widow's House), is not explained in the sources, but the building stands at 3 Karpnicka Street beside the Łomnica Palace and park, forming one palace complex. Since 1995-1998 renovations it has housed a hotel, restaurant and café, and it serves as the seat of the Dominium Łomnica Foundation, which works to protect the heritage of the Jelenia Góra Valley Cultural Park.