Jencks could refer to:
Jencks v. United States, a U.S. Supreme Court case Jencks Act, a law passed by the U.S. Congress regarding the rules of procedure in Federal courts, after the Supreme Court case had been decided
People with the surname Jencks Bob Jencks (1941–2010), American football player Charles Jencks (1939–2019) American cultural theorist, landscape designer, architectural historian, cancer center founder Christopher Jencks (1936–2025), American social scientist Clinton Jencks (1918–2005), American labor and social justice activist Maggie Keswick Jencks (1941–1995), Scottish writer, artist and garden designer Penelope Jencks (born 1936), American sculptor Richard Jencks (1921–2014), American television executive and lawyer William Jencks (1927–2007), American biochemist
See also Jenckes, a surname Jenks (disambiguation)