John Small may refer to:

Politicians

• John Small (Canadian politician, born 1746) (1746–1841), political figure in Upper Canada
• John Small (Canadian politician, born 1831) (1831–1909), member of the Canadian House of Commons
• John Francis Small (1853–1923), Member of the United Kingdom Parliament for County Wexford
• John Humphrey Small (1858–1946), U.S. Representative from North Carolina

Sportspeople

• John Small (cricketer) (1737–1826), English cricketer
• Jack Small (1765–1836), English cricketer
• John Small (American football) (1946–2012), American football player
• John Small (Gaelic footballer) (born 1993), Gaelic footballer

Military figures

• John Small (British Army officer) (1726–1796), active in the American Revolutionary War
• John Small (gunsmith) (1759–1821), American gunsmith, sheriff, and first Indiana Adjutant General
• John Small (British Army medical officer) (1823–1879), British Army deputy surgeon-general

Others

• John Small (librarian) (1828–1886), librarian of the University of Edinburgh
• John Bryan Small (died 1915), African-American bishop in the AME Zion Church
• John Kunkel Small (1869–1938), American botanist