Thomastown (Parliament of Ireland constituency)

Thomastown was a constituency represented in the Irish House of Commons until 1800. Following the Act of Union 1800 the borough was disenfranchised.

Members of Parliament

 * 1560 Francis Cosby and Henry Colley
 * 1585 Walter Sherlock and Robert Porter
 * 1613–1615 Robert Porter and Nicolas Robucke
 * 1634–1635 Patrick Sherlock and Jacob Walsh
 * 1639–1649 Seafoule Gibson and Michael Wandesford
 * 1661–1666 Robert Shapcote (sat for Wicklow and replaced 1661 by John Brett) and Thomas Burrell