Sir Thomas Hanmer, 2nd Baronet (1612–1678) was an English politician who sat in the House of Commons in 1640 and from 1669 to 1678. He was a Royalist during the English Civil War and raised troops for Charles I. In his personal life, he was a keen horticulturist. He is not to be confused with Sir Thomas Hanmer, 2nd Baronet (1747–1828) of the second creation,[1] nor with his grandson, Sir Thomas Hanmer, 4th Baronet.