Jack Daniel's is a brand of Tennessee whiskey and the top-selling American whiskey in the world. It is produced in Lynchburg, Tennessee, by the Jack Daniel Distillery, which has been owned by the Brown–Forman Corporation since 1956.

Packaged in square bottles, Jack Daniel's "Black Label" Tennessee whiskey sold 12.5 million cases in 2017. Other brand variations, such as Tennessee Honey, Gentleman Jack, and Tennessee Fire, added another 2.9 million cases to sales. Sales of an additional 800,000 equivalent cases in ready-to-drink (RTD) products brought the fiscal year total to more than 16.1 million equivalent adjusted cases for the entire Jack Daniel's family of brands. 

Jack Daniel's home county of Moore is a dry county, so the product is not available for purchase at stores or restaurants within the county.
ジャックダニエル