Thomas Dundas

Thomas Dundas may refer to:


 * Thomas Dundas (of Fingask and Carronhall) (died 1786), MP for Orkney and Shetland
 * Thomas Dundas, 1st Baron Dundas (1741–1820), British politician
 * Thomas Dundas (British Army officer) (1750–1794), governor of Guadaloupe
 * Thomas Dundas (Royal Navy officer) (c. 1765–1841), British naval officer of the Napoleonic Wars
 * Thomas Dundas, 2nd Earl of Zetland (1795–1873), British nobleman and politician
 * Thomas Dundas (High Sheriff) of Sussex