Elizabeth "Betsy" Russell (born September 6, 1963) is an American actress who is best known for her roles in Private School (1983), Tomboy (1985), and as Jill Tuck, one of the primary characters of the Saw film series from 2006 to 2010.

Russell was born in San Diego, California, the daughter of Constance (née Lerner) and Richard Lion Russell, a stock analyst, and the granddaughter of journalist and educator Max Lerner. Her father and maternal grandfather were Jewish. Russell wanted to be an actress since the age of eight and started acting in school plays. She appeared in a Pepsi commercial that was taped locally while in high school. After graduating from Mission Bay High School in 1981, she moved to Los Angeles and began taking acting classes before landing her first role. She did a masters program in Spiritual Psychology at the University of Santa Monica and is a certified hypnotist and life coach, also from the University of Santa Monica.