Jill is an English feminine given name, a short form of the name Gillian and Ghislaine, which in turn originated as a Middle English variant of Juliana. Jill was such a common name that it had an everygirl quality, as in the 15th century English nursery rhyme Jack and Jill.^[1] By the 17th century, the name had become a term for a "common street jade," implying promiscuous sexual behavior, and declined in usage in the Anglosphere.^[2] Usage of the name increased again in the 20th century. The name was most used in English-speaking countries from the 1930s to the 1970s. It is currently well-used in the Netherlands.^[3]

• Jill Astbury, Australian researcher into violence against women
• Jill Balcon (1925–2009), British actress
• Jill S. Barnholtz-Sloan, American biostatistician and data scientist
• Jill Becker, American psychological researcher
• Jill Biden (born 1951), American educator and the First Lady of the United States
• Jill E. Brown (born 1950), African American aviator
• Jill Carroll (born 1977), American journalist
• Jill Clayburgh (1944–2010), American actress
• Jill Costello (1987–2010), American athlete and lung cancer activist
• Jill Craigie (1911–1999), British film director and writer
• Jill Craybas (born 1974), American tennis player
• Jill Dando (1961–1999), British television presenter
• Jill Dickman, Republican member of the Nevada Assembly
• Jill Dillard (born 1991), American reality TV personality
• Jill Evans (born 1959), Welsh politician
• Jill Fisch, American professor at the University of Pennsylvania Law School
• Jill Frappier (born 1944), British voice actress
• Jill Furse (1915–1944), English actress
• Jill Gascoine (1937−2020), English actress and novelist
• Jill Gibbon, British artist
• Jill Green, American dance educator and scholar
• Jill Goodacre (born 1964), American model and actress
• Jill Harris, American voice actress
• Jill Hennessy (born 1968), Canadian actress and musician
• Jill Ireland (1936–1990), British actress
• Jill Janssens (born 2003), Belgian footballer
• Jill Johnson (born 1973), Swedish singer
• Jill Jones (disambiguation), several people
• Jill Knight (1923–2022), British politician
• Jill Koshiol, American cancer epidemiologist
• Jill Martin (1938–2016), English musical theatre actress
• Jill Mellick, Jungian-oriented clinical psychologist
• Jill Morris (born 1967), British diplomat
• Jill Murphy (1949–2021), English writer and illustrator
• Jill P. Carter (born 1964), American politician
• Jill Scott (born 1972), American soul singer
• Jill W. Smith, American philanthropist
• Jill Stanley, Canadian actress who was a cast member on the Canadian sketch comedy TV series You Can't Do That on Television
• Jill St. John (born 1940), American actress
• Jill Talley (born 1962), American voice actress
• Jill Thompson (born 1966), American illustrator and write
• Jill Long Thompson (born 1952), American politician and academic
• Jill Vidal (born 1982), Hong Kong singer
• Jill Wagner (born 1979), American actress
• Jill Paton Walsh (1937–2020), English novelist and children's writer
• Jill Zarin, American television personality
• Jill Zimmerman (born 1959), computer scientist and professor at Goucher College

• Jill, a character in the nursery rhyme "Jack and Jill"
• Jill Foster Abbott, a character on the soap opera The Young and the Restless
• Jill Andersen, Riley's mother during the events of Disney Pixar's Inside Out. She is not named in the film itself, but rather in supplementary material.
• Genocide Jill, a serial killer and the alternate personality of Toko Fukawa from the Danganronpa series
• Jillian "Jill" Mastrano Dragomir, a character from Richelle Mead's Bloodlines (book series)
• Jill Masterson, from Goldfinger
• Jill Pembroke, a character in the American sitcom television series Charles in Charge
• Jill Pole, a main character in C. S. Lewis' The Chronicles of Narnia: The Silver Chair
• Jill Roberts, a main character in Scream 4
• Jill Taylor, the wife of Tim Taylor from the ABC sitcom Home Improvement
• Jill Valentine, a character from the Resident Evil video games series
• Jill Warrick, the lead female character from Final Fantasy XVI
• Jill, a character in Katharine Kerr's Deverry Cycle book series

• Amy-Jill Levine (born 1956), feminist theology professor
• J. Jill Suitor, sociology professor
• Suzanne Jill Levine (born 1946), American poet and translator
• Lara Jill Miller (born 1967), American actress