Bethell is a surname. Notable people with the surname include:
Alexander Bethell GCMG KCB (1855–1932), Royal Navy officer who went on to be Commander-in-Chief, PlymouthAnna Bethell (1882–1969), English actress, singer and stage directorBaron Bethell, of Romford in the County of Essex, title in the Peerage of the United KingdomBob Bethell, Republican member of the Kansas House of Representatives, representing the 113th districtChristopher Bethell (1773–1859), Bishop of BangorErnest Bethell, British journalist who worked in Korea under Japanese ruleGeorge Bethell (1849–1919), Royal Navy officer and Conservative politicianHugh Bethell (died 1679) (1615–1679), English politician who sat in the House of Commons from 1660 to 1679John Bethell, 1st Baron Bethell (1861–1945), British banker and Liberal politicianLauran Bethell (21st century), American Baptist missionaryLeslie Bethell (born 1937), English historian, university professor, and BrazilianistMarie Bethell Beauclerc (1845–1897), pioneer in the teaching of Pitman's shorthand and typing in Birmingham, EnglandNicholas Bethell, 4th Baron Bethell (1938–2007), British historian of Central and Eastern EuropeRay Bethell, professional kite flyer in Vancouver, CanadaRichard Bethell, 1st Baron Westbury (1800–1873), Lord Chancellor of Great BritainRichard Bethell (1772–1864) (1772–1864), British Tory and then Conservative Party politician from Rise, YorkshireRoy Bethell (born 1906), English footballerTabrett Bethell (born c. 1982), Australian model and actressTom Bethell (born 1936), journalist who writes mainly on economic and scientific issuesTony Bethell (1922-2004), RAF pilot and participant in the "Great Escape"Vincent Bethell, British activist for the right to be nude in public