Thomas Sinclair
Thomas Sinclair may refer to:
- Thomas Sinclair, Northern Irish Member of Parliament
- Thomas Sinclair, Ulster-Scots businessman and politician
- Thomas Sinclair Jr., politician in Manitoba, Canada
- Tom Sinclair, American athlete
- Tom Sinclair , Scottish football goalkeeper
- Tommy Sinclair , English footballer
- Tommy Sinclair , English footballer
- Tommy Sinclair, Scottish footballer
- Thomas Sinclair, a contributor to the British Dictionary of National Biography
- Thomas Sinclair, American businessman whose widow built the Brucemore mansion in Cedar Rapids, Iowa
- Thomas Sinclair, Australian actor in silent films such as The Kelly Gang
- Tom Sinclair, coxswain of Scottish lifeboat RNLB Emma Constance
- Thomas Sinclair, fictional character in the Killzone video games
- Albert Thomas Sinclair, American lawyer who corresponded with Archduke Joseph Karl of Austria about the Romani language