Arnoldus von Falkenskiold (11 June 1743 – 15 May 1819) was a Danish military officer and landowner- He was the brother of Otto von Falkenskiold.
He was the owner of Sæbygård at Kalundborg (1779-1797) and Sophienberg (1797-1819) at Hørsholm and founded the manors of Falkenhøj (1787) and Frihedslund (1790).