Hardin is a surname. Notable people with the surname include:
Charles Hardin Holley (1936-1959), birth name of Buddy Holly
Charles Henry Hardin (1820–1892), co-founder of Beta Theta Pi fraternity
Chelsea Hardin, American beauty pageant titleholder, Miss Hawaii USA 2016, and 1st runner up Miss USA 2016 Clifford M. Hardin, U.S. Secretary of Agriculture DeVon Hardin, American basketball player Garrett Hardin (1915–2003), American ecologist George A. Hardin (1832–1901), New York lawyer and politician Glen Hardin, American musician/piano player Glenn Hardin (1910–1975), American athlete Jerry Hardin, American actor Jim Hardin (1943–1991), American baseball player Jo Hardin, American statistician John Hardin (1753–1792), Continental Army officer in the American Revolutionary War John J. Hardin (1810–1847), U.S. Representative from Illinois John Wesley Hardin (1853–1895), outlaw and gunfighter of the American Old West Joseph Hardin Sr. (1734-1801), Patriot in the American Revolutionary War and politician. Julia Hardin, All-American Girls Professional Baseball League player Lil Hardin Armstrong (1898–1971), American jazz musician and second wife of Louis Armstrong Louis T. Hardin (1916–1999), American musician known as Moondog Martin Davis Hardin (1837–1923), Union Army general in the American Civil War Martin D. Hardin (1780–1823), U.S. Senator from Kentucky Melora Hardin, American actress Paul Hardin Jr. (1903–1996), bishop of The Methodist Church (USA) Rusty Hardin, American attorney Salvor Hardin, fictional character in Isaac Asimov's Foundation series Terri Hardin, American puppeteer Tim Hardin (1941–1980), American folk musician and composer Ty Hardin (1930-2017), American actor