Jenny is the English diminutive of Jennifer — from the Welsh Gwenhwyfar ("white phantom"), the Welsh form of Guinevere. A top-25 US baby name from 1971 to 1980, peaking at #18 in 1976. Jenny Han (born 1980) — *Korean American novelist; the To All the Boys I've Loved Before trilogy (2014-2017) and The Summer I Turned Pretty trilogy (2009-2011) made her one of the best-selling YA authors of the 2010s-2020s; both adapted into hit Netflix films and an Amazon Prime series she also showruns. Jenny Lind (1820-1887) — Swedish opera soprano known as the "Swedish Nightingale"; P. T. Barnum's 1850 American tour with her grossed the equivalent of $20 million in today's dollars and is considered the foundation of modern celebrity culture. Jenny Slate (born 1982) — American comedian and actress; Marcel the Shell with Shoes On (2021 film, Best Animated Feature nomination). Jenny McCarthy — The View* host. Jenny from the Block — Jennifer Lopez (2002).
Subject of countless YA fiction studies.
In Pythagorean numerology the letters of Jenny reduce to 5, The Seeker. This is a traditional interpretive system, not a factual claim about the name.