Hales is a surname. Notable people with the surname include
Alejandro Hales (1923-2001), Chilean politicianAlex Hales (born 1989), English cricketerAlfred W. Hales, American mathematicianDerek Hales, English footballerE. E. Y. Hales, English historianSir John Hales (1469/70–1540?), Baron of the ExchequerJames Hales (c. 1500–1554), English judge, son of aboveJohn Hales, English theologianJohn Hales (d.1571), English writer and politicianRobert Hales, English Lord High TreasurerRobert Hales (director), British graphic designer and music video directorRobert D. Hales, Senior apostle in The Church of Jesus Christ of Latter-day SaintsR. Stanton Hales, American mathematician and educatorSamuel Hales (1615–1693), founding settler of Hartford and Norwalk, ConnecticutStephen Hales, English physiologist, chemist and inventorThomas Hales (disambiguation), any of various people of this nameThomas Hales (dramatist), Anglo-French dramatist and librettist of the 18th centuryThomas Callister Hales, American mathematician.Tom Hales, IRA volunteerHales, a Triballi king