Thomas Gleadowe-Newcomen, 2nd Viscount Newcomen, known as The Honourable Sir Thomas Gleadowe-Newcomen, Bt between 1807 and 1817, was an Irish politician and banker.
- Occupation
- politician
- Position held
- member of the 2nd Parliament of the United Kingdom
- Citizenship
- Kingdom of Ireland, United Kingdom of Great Britain and Ireland
- Born
- September 18, 1776
- Died