Kelly Reilly's Real Name: Jessica Kelly Siobhán Reilly

Quick answer: Kelly Reilly's real name is Jessica Kelly Siobhán Reilly. She was born on July 18, 1977, in Chessington, Surrey, England.

Real name and early life

The British Film Database and other reference sources list her full name as Jessica Kelly Siobhán Reilly. Jessica is her first given name. She has always gone by her middle name, Kelly, and Reilly is her family surname. She was born in Chessington, on the Surrey edge of Greater London.

Quick facts

• Real name: Jessica Kelly Siobhán Reilly
• Known as: Kelly Reilly
• Born: July 18, 1977, in Chessington, Surrey, England
• Known for: Actor
• Notable work: Maybe Baby, After Miss Julie, Pride & Prejudice, Eden Lake
• Sources checked: British Film Database, The Hollywood Reporter

Career highlights

Reilly began acting on stage in her teens. Her film career started with the English comedy Maybe Baby (2000), and her performance in After Miss Julie at the Donmar Warehouse (2003–2004) earned a Laurence Olivier Award nomination. On screen she appeared in Pride & Prejudice (2005), led the horror thriller Eden Lake (2008), and played Mary Morstan in Sherlock Holmes (2009) and Sherlock Holmes: A Game of Shadows (2011). She starred opposite Denzel Washington in Flight (2012).

On television she led the British crime drama Above Suspicion (2009–2012) and appeared in Black Box (2014), the second season of True Detective (2015), and Britannia (2018). She is best known as Beth Dutton, opposite Kevin Costner, on Paramount's Yellowstone (2018–2024), a role she continues in the spin-off Dutton Ranch.

Her Yellowstone fame led many viewers to search for her "real name" and find that her first given name is Jessica.

Name notes

"Kelly Reilly" is a real name: it drops only her first given name, Jessica, and her second middle name, Siobhán. Fan sites often copy names from one another, so we checked this page against British Film Database and The Hollywood Reporter. Where sources disagree, we say so rather than guess. We also leave out middle names, nicknames, and origin stories that we couldn't confirm in a reliable source. A popular claim isn't enough to earn a place on this page if no encyclopedia, official record, or major news outlet backs it up.