Thomas Daniel Chapman (31 October 1815[nb 1] – 17 February 1884) was the Premier of Tasmania from 2 August 1861 until 20 January 1863.

When the Tasmanian House of Assembly was created in 1856 Chapman became a minister under Tasmania's first responsible government headed by William Champ.

Although his term as Premier ended he became Colonial Treasurer again in Richard Dry's ministry from 24 November 1866 until 1869.

In August, 1873 he joined Alfred Kennerley's ministry holding the position of Colonial Secretary from 1873 until 1876.

After this Chapman served in no more ministries but was President of the Tasmanian Legislative Council on 11 July 1882 until his death.