Thomas Pakenham may refer to:

• Thomas Pakenham (historian) (born 1933), 8th Earl of Longford, Anglo-Irish historian and arborist
• Thomas Pakenham, 1st Baron Longford (1713–1766), Irish peer and politician
• Thomas Pakenham (Royal Navy officer) (1757–1836), British naval officer and politician
• Thomas Pakenham, 2nd Earl of Longford (1774–1835), Irish peer
• Thomas Pakenham, 5th Earl of Longford (1864–1915), Irish peer and soldier
• Thomas Henry Pakenham (1826–1913), MP for Antrim

This disambiguation page lists articles associated with the same personal name. If an internal link led you here, you may wish to change the link to point directly to thee intended article.