Jack Daniels may refer to:

• Jack Daniels (American football) (1906–1977), American football running back
• Jack Daniels (baseball) (1927–2013), Major League Baseball outfielder
• Jack Daniels (coach) (born 1933), Olympian in the modern pentathlon and a coach for cross-country running
• Jack Daniels (New Mexico politician) (1923–2003), politician from New Mexico
• Jack Daniels (Ohio politician)
• Jack Daniels, guitarist of Highway 101
• Jack Daniels, guitarist of War of Ages
• William Daniels (automotive engineer) (1912–2004), English automotive engineer known as Jack

• Jack Daniel's, a brand of whiskey

• Jack Daniel (disambiguation)
• John Daniels (disambiguation)