The Diamond T Company was an American automobile and truck manufacturer. They produced commercial and military trucks.
The Diamond T Motor Car Company was founded in Chicago in 1905 by C. A. Tilt. Reportedly, the company name was created when Tilt's shoe-making father fashioned a logo featuring a big “T” (for Tilt) framed by a diamond, which signified high quality.
Diamond T manufactured two pickup trucks: the Model 80 and the Model 201. Both pickups were powered by the Hercules QX-series 6-cylinder engines. The Model 201 was produced from 1938 to 1949.