John Griffiths may refer to:
Politicians and lawyers John Griffiths (Welsh politician) (born 1956), Welsh Labour Party politician John Griffiths (Conservative politician) (born 1953), British local government leader John Griffiths (Liberal politician) (born 1934), British politician and author John Calvert Griffiths (born 1931), former Attorney General of Hong Kong and lawyer John L. Griffiths (1855–1914), Consul General of the United States to Britain John Jones Griffiths (1839–1901), Welsh educationalist and politician
Sportsmen John Griffiths (cricketer, born 1863) (1863–?), English cricketer John Griffiths (cricketer, born 1931) (1931–1982), cricketer Jack Griffiths (1909–1975), English footballer John Griffiths (footballer, born 1876) (1876–1953), English football wing half (Grimsby Town) John Griffiths (footballer, born 1951) (born 1951), English football midfielder (Aston Villa, Stockport County) John Griffiths (rugby union) (1948–2020), Australian rugby union player
Other people John Griffiths (shipowner) (1801–1881), Australian colonial shipowner and builder John Griffiths (academic) (1806–1885), English academic and Warden of Wadham College, Oxford John Griffiths (Medal of Honor) (1835–?), American Civil War soldier and sailor and Medal of Honor recipient John Griffiths (artist) (1837–1918), artist who worked in India John Griffiths (curator) (1952–2010), Welsh museum curator John Griffiths (mathematician) (1837/8–1916), Welsh mathematician John Griffiths (musician) (born 1952), Australian vihuelist and musicologist John F. Griffiths (1926–2003), British and American climatologist John W. Griffiths (1809–1882), American naval architect , a Liberty ship J. Gwyn Griffiths (1911–2004), Welsh poet, Egyptologist and nationalist political activist John Griffiths (surgeon) (1754–1822), Surgeon to Queen Charlotte's household John Griffiths (archdeacon of Llandaff) (1820–1897) John O. Griffiths (1923–2001), British philatelist John Fraser Griffiths (died 1971), South African who worked as a British colonial official
See also Jonathan Griffiths, Welsh rugby footballer Jonathan Griffiths (shipowner) (1773–1839), English-born Australian convict, shipowner and builder