Herrhamra, Manor house in Stockholm Archipelago, Sweden.

Herrhamra is a manor estate on southern Torö in Nynäshamn municipality. Its main building, in Empire style, was built in 1850 to designs by Ludvig Hedin. The grounds include a timbered former bailiff's residence, five wooden villas, an orangery and a barn complex from 1919. The estate lies in flat terrain sloping toward the beaches at Ankarudden.

Herrhamra, recorded as "Hærihammær", appears in the 13th-century sailing description of the Danish king Valdemar Sejr as a landmark, and a harbour likely existed here long before. In 1511 seven ships entered the harbour and sailed on to Stockholm after a day. In the 17th century it became a säteri owned by the Oxenstierna and Sparre families; the original manor at Ankarudden burned during the Russian raids of 1719, and the present Empire-style main building was erected in 1850 to designs by Ludvig Hedin.

The name Herrhamra appears as "Hærihammær" in the 13th-century sailing description of Danish King Valdemar Sejr. The estate later belonged to the Oxenstierna and Sparre families, and the pilot cemetery has served sailors from Öja since the 17th century.

The manor house is reachable by boat or car through the nearby Ankarudden area, where Nynäshamn provides basic services such as bakeries and shops. The warmer months offer the most reliable access for visitors planning to arrive by water.

Herrhamra is the only surviving windmill in Nynäshamn municipality: an octagonal timbered Dutch-style mill from the 1860s, now without its sails, standing on the old village site by Ankarudden. Northwest of the mill building lies the mill cottage, once the miller's home.