J. T. S. Brown is a Kentucky bourbon whiskey produced by the Heaven Hill Distillery company. The distilling operation is in Louisville, Kentucky and aging and bottling operations are in Bardstown, Kentucky. The primary expression of the brand is 40% alcohol by volume (ABV), or 80 U.S. proof. There is also a 100 proof bottled in bond version.

The brand was named after John Thompson Street Brown Jr., who together with his half-brother George Garvin Brown, opened a wholesale liquor business that later became the Brown-Forman corporation. The brand was originally produced by J.T.S. Brown and Sons in the 1800s, and ownership of the brand eventually devolved to Heaven Hill, a company founded in 1935.