Thomas Duncombe
Thomas Duncombe may refer to:
- Thomas Slingsby Duncombe, British Radical politician; Member of Parliament for Hertford, 1826–1832, and Finsbury, 1834–1861
- Thomas Duncombe (died 1746), British Member of Parliament for Downton, 1711–1713, and Ripon, 1734–1741
- Thomas Duncombe (died 1779), British Member of Parliament for Downton, 1751–1754 and 1768–1775, and Morpeth, 1754–1768