Namesakes
Dutch Prime Ministers:
1 prime minister
Joan Röell 1894-1897 
Fictional Characters from Song Titles:
1 character
(character) Joan 1705 Gossip Joan
Fictional Characters from Television:
3 characters
Joanie Hansen 1999 Providence
Joan Holloway 2007 Mad Men
Joan Hunt 2011 Body of Proof
Grammy Award Winners:
1 album of the year/song of the year
(album of the year/song of the year) Barbra Streisand (a.k.a. Joan) 1964; 1978 The Barbra Streisand Album; Evergreen
Hall-of-Famers:
1 basketball
(basketball) Joan Crawford 1997
Hurricanes and Tropical Storms:
1 hurricane
Hurricane Joan 1988
Notable Actors and Entertainers:
13 actors, 2 presenters
Joan Crawford c. 1904-1977
Joan Bennett 1910-1990
Joan Fontaine 1917-2013
Joan Greenwood 1921-1987
Jean Kent (a.k.a. Joan) 1921-2013
Joan Copeland 1922-2022
Joan Leslie 1925-2015
Joan Plowright 1929-
Joan Rivers 1933-2014
Barbra Streisand (a.k.a. Joan) 1942-
Joan Allen 1956-
Joan Cusack 1962-
Wendy Williams (a.k.a. Joan) 1964-
Keala Settle (a.k.a. Joan) 1975-
Melissa Joan Hart 1976-
Notable Artists:
1 painter/sculptor
Joan Miró 1893-1983
Notable Businesspeople:
1 businessperson
Joan Gamper 1877-1930
Notable Military Figures:
1 soldier
Jeanne of Arc (a.k.a. Joan) 1412-1431
Notable Musicians:
4 musicians, 3 singers
Joan Sutherland 1926-2010
Joan Baez 1941-
Barbra Streisand (a.k.a. Joan) 1942-
Joni Mitchell 1943-
Diane "Deedles" Schuur (a.k.a. Joan) 1953-
Joan Jett 1958-
Keala Settle (a.k.a. Joan) 1975-
Notable Scientists and Inventors:
1 anthropologist
Kathy Reichs (a.k.a. Joan) 1948-
Notable Writers:
3 authors
Joan Didion 1934-2021
Kathy Reichs (a.k.a. Joan) 1948-
M. J. Hyland (a.k.a. Joan) 1968-
Olympic Medalists:
4 gold, 2 bronze, 2 silver, 1 bronze/silver
(gold) Annette Rogers (a.k.a. Joan) 1932; 1936 4x100 m relay
(bronze/silver) Jody Alderson (a.k.a. Joan) 1952; 1956 swimming - 4x100 m freestyle relay
(gold) Joan Harrison 1952 swimming - 100 m backstroke
(silver) Joan Rosazza 1956 swimming - 4x100 freestyle relay
(silver) Nancy Simons (a.k.a. Joan) 1956 swimming - 4x100 m freestyle relay
(gold) Joan Spillane 1960 swimming - 4x100 m freestyle relay
(bronze) Kate Schmidt (a.k.a. Joan) 1972; 1976 javelin throw
(gold) Joan Benoit 1984 marathon
(bronze) Joan Lino Martínez 2004 long jump
Oscar Award Winners:
3 actresses
(actress) Joan Fontaine 1942 Suspicion
(actress) Joan Crawford 1946 Mildred Pierce
(actress) Barbra Streisand (a.k.a. Joan) 1969 Funny Girl
Rock and Roll Hall-of-Famers:
3 musicians
Joni Mitchell 1997
Joan Jett 2015 Joan Jett & the Blackhearts
Joan Baez 2017
Saints:
5 saints, 2 blessed
Blessed Joan of Aza c. 1135-1205
Saint Jeanne of Arc (a.k.a. Joan) 1412-1431
Blessed Joana of Portugal (a.k.a. Joan) 1452-1490
Saint Jeanne of Valois (a.k.a. Joan) 1464-1505
Saint Jeanne Delanoue (a.k.a. Joan) 1666-1736
Saint Jeanne-Antide Thouret (a.k.a. Joan) 1765-1828
Saint Jeanne-Elisabeth Bichier des Ages (a.k.a. Joan) 1773-1838
Shakespearian Characters:
1 character
Joan la Pucelle Henry VI (1)
Spanish Kings and Queens:
1 queen
Queen Juana the Mad (a.k.a. Joan) 1504-1555