David Alexander Thomson (26 February 1856 – 30 October 1926) was an Australian businessman and politician.

He was a member of the House of Representatives from 1903 to 1906, holding the Queensland seat of Capricornia for the Australian Labor Party (ALP).

[1] Having spent time on the Victorian goldfields, he moved to Coolgardie in 1894 during the Western Australian gold rush.

[2] In New South Wales, Thomson and his wife ran hotels in Katoomba, Bathurst, and Tenterfield.

[3] In 1902 he acquired the Rockhampton Aerated Water Company, a cordial factory which he "built up into a business of considerable magnitude".