Mary Jones may refer to:
American
Mary Alice Jones (1898–1980), American children's writer
Mary Cover Jones (1896–1987), American psychologist
Mary Ellen Jones (chemist) (1922–1996), American biochemist
Mary Ellen Jones (politician) (born 1936), educator and politician in New York State
Mary Gardiner Jones (1920–2009), first woman to serve as a member of the Federal Trade Commission
Mary Harris Jones (1837–1930), known as Mother Jones, Irish-born American community organizer
Mary Jane Richardson Jones (1819–1909), American abolitionist and suffragist
Mary Letitia Jones (1865–1946), librarian and head of Los Angeles Public Library 1900-1905
Mary Smith Jones (1819–1907), first lady of the Republic of Texas
Mary Jones (rower) (born 1986), American rower
Mary Jones (physician) (c. 1828–1908), American physician
Mary Jones (Peter Sewally), 19th century American sex worker
Mary Jones Meyer, World Series of Poker champion
Mary Cadwalader Rawle Jones (1850–1935), American author, socialite, and social leader
Mary Estus Jones Webb (1924–1995), née Jones, mayor-president of Baton Rouge
Mary Jones Berry, née Jones, American aerospace engineer
Mary Jones Bradley (1920–2010), married name Jones, American heiress, racehorse owner and breeder
British
Mary Jones (poet) (1707–1778), English poet
Mary Jones (actress) (1896–1990), Welsh actress
Mary Jones and her Bible (1784–1864), Welsh girl associated with Bible dissemination
Mary Vaughan Jones (1918–1983), Welsh children's author and schoolteacher
Mary Oliver Jones (1858–1893), Welsh-language novelist
Mary Lloyd Jones (born 1934), Welsh painter and printmaker
Molly Morgan (1762–1835), English convict, landowner, and farmer whose birth name was Mary Jones
Mary Latchford Jones (1877–1968), Anglo-Irish politician
Mary Whitmore Jones (c. 1823–1915), English author
Brands
Jones Soda#Mary Jones