Collingbourne Ducis is a village and civil parish on Salisbury Plain in Wiltshire, England, about 10 miles (16 km) south of Marlborough.

From the Domesday Book we know Earl Harold held the manor, and in 1086 a large settlement of 87 households was recorded.

The Bourne Iron Works in the village was established by James Rawlings in the 1860s and made agricultural implements until the outbreak of World War II.

[3] In 1974 a Saxon cemetery of archaeological significance was discovered in Cadley, including one bed burial.

The Post Office at Collingbourne Ducis was mentioned by Sir Anthony Hopkins' character, Mr. Stevens, in the 1993 film The Remains of the Day.

The village has one of the few surviving original Victorian post boxes inset to a flint cobble wall at Sally Lunn's Cottage.

It is in the area of Wiltshire Council unitary authority, which is responsible for all significant local government functions.