Elizabeth "Betty" Cooper is a main character on The CW's Riverdale. She is portrayed by Lili Reinhart.

Betty was a student at Riverdale High School and longtime best friend of Archie Andrews, Jughead Jones, Kevin Keller and Veronica Lodge. She is also a former River Vixen as well as an editor for the Register, with her mother. Betty is the youngest sibling to her sister, Polly and older half-brother, Charles Smith. Most recently, Betty has followed in her mother's footsteps of joining the Southside Serpents, alongside her then boyfriend, Jughead, making her the Serpent Queen to his King.