Jessica Hennessy (born 1 October 2001) is an Irish professional footballer who plays as a central defender for Nottingham Forest in the FA Women's National League North.

Hennessy is from County Westmeath and began her soccer career with Mullingar Athletic in 2014 where she represented The Midlands in the Gaynor Cup.

Following her underage career Hennessy then signed for Womens National League club Athlone Town ahead of the 2020 season.

[4][5] In 2022 Hennessy helped Athlone Town get to their first FAI Women's Cup Final where they lost 2–0 to her former side Shelbourne FC.

[6] Hennessy's impressive 2022 season with Athlone Town earned her a spot on the Womens National League team of the year as well as a recent call-up to Ireland’s home-based training camp.