Sir Thomas Heneage PC (1532 – 17 October 1595) was an English politician and a courtier at the court of Elizabeth I.
Thomas Heneage was born at Copt Hall, Epping, Essex, the son of Sir Robert Heneage and Lucy Buckton. Robert and his brother Thomas were members of Henry VIII's Privy Chamber, the latter holding the important office of Groom of the Stool. Thomas Heneage was educated at Queens' College, Cambridge.
In 1554 Heneage married Anne Poyntz, daughter of Sir Nicholas Poyntz and Joan Berkeley. Their only daughter Elizabeth married Sir Moyle Finch, Bt and was created Countess of Winchilsea. Following Anne's death in 1593, he married Mary Browne, Countess of Southampton on 2 May 1594; this marriage was childless.
Heneage was elected Member of Parliament for Stamford in 1553, before sitting for Arundel from 1559. He was then elected for Boston in 1563 but chose to sit for Lincolnshire. He was again returned for Lincolnshire in 1571 and 1572, and for Essex in 1584, 1586, 1589, and 1593.