Police were called at 6.30am to the accident near the A4 Beckhampton roundabout.
Sadly, the driver of the vehicle was pronounced dead at the scene.
A Wiltshire Police spokesman said: “His next of kin have been informed and our thoughts are with his family and friends. We would ask that their privacy is respected.
“Road closures are currently in place around the A4 and on the B4003 to West Kennet.
“We are appealing for anyone who might have witnessed the incident to contact us on 101 quoting log number 30 of today.”