Murderers •
Black Widow Gang, Colombian serial killer group •
Black Widows of Liverpool, two women hanged for murder in 1884 •
Bodenfelde Black Widows, German serial killer duo •
Black Widow Murders, murders committed in 1999 / 2005 by two elderly women in Los Angeles •
Belle Gunness, 25–40 victims spanning from 1884 to 1908 •
Vera Renczi (1903–1960), murdered 35 men, including her husband and her son •
Betty Neumar (1931–2011), dubbed "Black Widow" or "Black Widow Granny", accused of murdering one of her husbands •
Blanche Taylor Moore (born 1933), convicted murderer •
Griselda Blanco (1943–2012), Colombian drug trafficker, known for ordering or committing the murders of three ex-husbands •
Catherine Nevin (1950–2018), responsible for the 1996 murder of her husband in the pub they owned •
Stacey Castor (1967–2016), convicted murderer •
Lynn Turner (murderer) (1968–2010), convicted murderer • Áurea Vázquez-Rijos, Puerto Rican woman convicted of hiring a hitman to murder her ex-husband
Adam Anhang •
Melissa Ann Shepard (born 1935), Canadian murderer •
Patrizia Reggiani (born 1948), ex-wife of Maurizio Gucci, convicted of arranging his murder •
Chisako Kakehi (born 1946), Japanese serial killer; , awaiting execution for three murders •
Lyda Southard (1892–1958), American serial killer of husbands and other family members using arsenic from flypaper •
Esneda Ruiz Cataño (born 1968), Colombian serial killer of husbands for life insurance benefits from 2001 to 2010; is currently in El Pedregal Prison •
Elfriede Blauensteiner (1931–2003), Austrian serial killer •
Martha Needle (1863–1894), Australian serial killer •
Nannie Doss (1905–1965), American serial killer •
Christine Malèvre (born 1970), French serial killer •
Margit Filó (1914–1979), Hungarian serial killer •
Heloísa Gonçalves Duque Soares Ribeiro (born 1950), Brazilian-American murderer and suspected serial killer currently on the run •
Mary Ann Cotton (1832–1873), English murderer and suspected serial killer •
Dena Thompson (born 1960), British murderer •
Margarita Sánchez Gutiérrez (1953), Spanish serial killer •
Marie Alexandrine Becker (1879–1942), Belgian serial killer
Athletes •
Jeanette Lee (pool player) (born 1971), so-called because of her fondness for wearing black •
Sonya Thomas (born 1967), top-ranked competitive eater
Other •
Florentine Rost van Tonningen (1914–2007), Dutch neo-Nazi nicknamed
Zwarte weduwe (Black Widow) ==Arts and entertainment==