Kathryn Gallagher is an American singer and actress, best known for her portrayal of Bella Fox in the Broadway musical Jagged Little Pill, for which she received a Grammy Award for Best Musical Theater Album and a nomination for the Tony Award for Best Featured Actress in a Musical.
Gallagher was born on July 23, 1993, in New York City. She is the daughter of actor Peter Gallagher and producer Paula Harwood. Gallagher began acting at a young age, and she appeared in a number of regional theater productions before moving to Los Angeles to pursue a career in television and film.
In 2011, Gallagher made her television debut on the show Law & Order: Special Victims Unit. She has since appeared on a number of other television shows, including Glee, Nashville, and The Americans.