Thomas Stuart Chalmers (June 1816 – July 13, 1903) was an American businessman.
A pioneer of Chicago industry, he founded Fraser & Chalmers, a precursor to Allis-Chalmers (now part of AGCO).
Chalmers was born in Dronley, Scotland, in June 1816.
[1] Chalmers died at his home at 179 Ashland Boulevard in Chicago on June 28, 1903.
[2] Chalmers' son William served as President of Allis-Chalmers.