Henry Mangles Denham Thomson (28 April 1872 – 29 August 1947) was an Australian politician.
He was born at "Cormiston", a farm in Launceston.
In 1925 he was elected to the Tasmanian House of Assembly as a Nationalist member for Bass.
He held the seat until his defeat in 1931.
This article about a Nationalist Party of Australia politician is a stub.