Abbotsnäs, Manor house in Katrineholm Municipality, Sweden.

Abbotsnäs is a farm and former manor in Floda parish, Katrineholm Municipality, on the northern shore of Lake Floden. Its main building dates from the late 19th century, though some parts may go back to the 1600s. The property also has an older red-painted grain storehouse.

Abbotnäs was a medieval estate of Julita Monastery, which gave the place its name. In 1527 the farm was taken over by the crown, and in 1573 it was donated to Lars Västgöte, who received tax exemption for it. In the 1920s the estate belonged to the Grill family and covered 971 hectares, of which 330 were arable land.

The name Abbotnäs comes from the estate's medieval ownership by Julita Abbey, which held it until the Crown took it over in 1527. Since 1992 Jan and Christin Larsson have run the farm as a family business, with crop cultivation, beef production, forestry and residential letting.

Abbotnäs is a working farm run since 1992 by Jan and Christin Larsson, with crop cultivation, beef production, forestry and residential letting, so the grounds are private property rather than a visitor site. The estate lies on the northern shore of Lake Floden in Floda parish; the red-painted grain storehouse and the late 19th-century main building are seen from outside. Contact the farm in advance before travelling there.

The name comes from Julita Abbey, which owned the estate in the Middle Ages; "Abbotnäs" refers to the abbot's headland. After the 1527 reduction the farm passed to the crown, and in 1573 Lars Västgöte received it with frälsefrihet, tax exemption in return for mounted service.