The Alūksne New Castle, also referred to as the Alūksne new Palace, is a palace in Alūksne, in the Vidzeme region of Latvia. It was built between 1859 and 1864 by baron and Privy Councillor Alexander von Vietinghoff in the Tudor Revival style.
The Vietinghoff family has been connected with Alūksne since the fourteenth century, when an Arnold von Vietinghoff became the Commander of the local Teutonic castle. Since the mid-18th century the town was a barony in the Russian Empire and became one of the main summer residences of the Vietinghoffs in the Baltics after their manor in Zolitūde was sold in 1795.