Saltø is a manor house and estate located 8 km west of Næstved in southeastern Denmark. The estate was acquired by Carl Adolph von Plessen in 1725 and had been owned by the von Plessen family since then. The main building from the second half of the 16th century and two half-timbered buildings from the second half of the 18th century were listed on the Danish registry of protected buildings and places in 1918. The estate covers 1,050 hectares.