Thomas Sinclair, was an Irish unionist politician.
- Occupation
- politician
- Position held
- Member of the Senate of Northern Ireland, Member of the Privy Council of Ireland, member of the 37th Parliament of the United Kingdom, member of the 36th Parliament of the United Kingdom
- Citizenship
- United Kingdom, United Kingdom of Great Britain and Ireland
- Born
- December 17, 1857
- Died
- November 25, 1940