Kellie Noelle Martin is an American television actress who is best known for her roles as Lucy Knight on the NBC medical drama series ER from 1998 to 2000, and Rebecca Thatcher on the ABC drama series Life Goes On throughout its entire run, from 1989 to 1993.
She voiced Sadira on the Disney animated series Aladdin, and Roxanne in the 1995 Disney animated film A Goofy Movie. She also played Linda in Help Wanted: Kids, Veronica in The Richest Cat in the World, Julie Zelman in the ABC TV show Grey's Anatomy, Michelle Larsen in the ABC TV show Private Practice and Army Captain Nicole Galassini in the ABC Studios TV show Army Wives.