Don Julio is a brand of tequila produced in Mexico. It is named after its founder, Julio Gonzalez, who began producing tequila in 1942. The tequila is made from blue agave plants grown in the highlands of Jalisco, Mexico, and is known for its smooth and rich taste. Don Julio offers a range of tequilas, including blanco, reposado, añejo, and 1942, a special edition aged for at least two and a half years. The brand is now owned by Diageo, a British multinational beverage company.