Claes Adolf Adelsköld (7 September 1824 – 1 October 1907) was a Swedish civil engineer, railway engineer, author, Army officer and member of the upper house of the Parliament of Sweden.

[1] Adelsköld was born at Nolhaga in Alingsås Municipality in Västra Götaland County, Sweden.

[2] [3] He studied at Chalmers University of Technology in Gothenburg, serving in the Swedish Army's Göta Artillery Regiment and became a lieutenant in 1844 in the Värmland jäger regiment; in 1849 he participated in the creation of the first Swedish railway open to civilian use.

[5] In 1867 he bought Steninge Palace (Steninge Slott) in Sigtuna Municipality, where he led an extensive social life with people that included Prince Oscar (the future Oscar II).

He sold the castle in 1873 and in 1876 repurchased the traditional family property in Alingsås Municipality, where he built a manor house known as Nolhaga slott.