Eriksholm Castle is a manor house located at the foot of the Isefjord inlet, 6 km south-east of Holbæk, in east Denmark.

The history of the estate dates back to 1400 but today's house was built in 1788 to a Neoclassical design by Caspar Frederik Harsdorff, the leading Danish architect of the time.

His son, who was also named Hans Diderik de Brinck-Seidelin and inherited Eriksholm in 1778, commissioned the architect Caspar Frederik Harsdorff to design a new main building which was completed in 1788.

Brinck-Seidelin was hit by the financially difficult times for the large landowners and Eriksholm was in 1824 sold in public auction to Prime Minister Frederik Julius Falkenskiold Kaas (1758–1827).

Designed in the Neoclassical style, Eriksholm is built in white-washed brick and consists of three wings under a black-glazed tile roof.