Aneurin may refer to:
Aneurin, an alternative name for thiamine (vitamin B1)
Aneurin Barnard (born 1987), Welsh actor Aneurin Bevan (1897–1960), Welsh politician Aneurin Donald, Welsh cricketer Aneurin Hughes (1937–2020), British diplomat Aneurin Jones (1930–2017), Welsh artist Aneurin Livermore, Welsh footballer Aneurin Norman, Welsh cricketer Aneurin Owen (disambiguation) Aneurin Rees, Welsh rugby union player Aneurin Richards, Welsh footballer Aneurin Williams, British Liberal Party politician Iolo Aneurin Williams, British writer, journalist and Liberal Party politician John Aneurin Grey Griffith, Welsh legal scholar
See also Aneirin, a 6th- or 7th-century Brythonic bard Saint Aneurin