Hardin is a surname. Notable people with the surname include:
Brian Hardin (born 1965), American politician from Nebraska 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 queen Clifford M. Hardin, American politician, 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), American army officer John J. Hardin (1810–1847), American politician from Illinois John Wesley Hardin (1853–1895), American outlaw and gunfighter Joseph Hardin Sr. (1734–1801), American soldier and politician Julia Hardin, American baseball player Lil Hardin Armstrong (1898–1971), American jazz musician, second wife of Louis Armstrong Louis T. Hardin (1916–1999), American musician known as Moondog Martin Davis Hardin (1837–1923), American general Martin D. Hardin (1780–1823), American politician from Kentucky Melora Hardin, American actress Paul Hardin Jr. (1903–1996), American bishop 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