Old Forester is a brand of Kentucky Straight Bourbon Whiskey produced by the Brown-Forman Corporation. It is officially the longest running Bourbon on the market today (approximately 144 years as of 2015), and was the first bourbon sold exclusively in sealed bottles. It was first bottled and marketed in 1870 by the former pharmaceutical salesman turned bourbon-merchant George Garvin Brown the founder of the Brown-Forman Corporation (whose descendants still manage the company). During the Prohibition period from 1920 to 1933, it was one of only 10 brands authorized for lawful production (for medicinal purposes).

Old Forester is produced under the supervision of Master Distiller Chris Morris (as of 2006) at the Brown-Forman distillery in Shively, Kentucky (which is located directly adjacent to the Southwest boundary of Louisville) using a mash bill of 72% corn (maize), 18% rye, and 10% malted barley (the same mash bill used for Woodford Reserve). Its mash bill has been described as “pretty standard” and “richer in rye than most bourbons”.

Bottling variations include Old Forester Classic (86 proof / 43% abv, 4 years old), Old Forester Signature (100 proof / 50% abv), and Old Forester Birthday Bourbon (introduced in 2002, 95 proof / 47.5% abv in 2010 bottling). In 2012, Brown-Forman changed the packaging and bottling label style of the complete Old Forester collection.