The second season of Veronica Mars, an American drama television series created by Rob Thomas, premiered on UPN in the United States on September 28, 2005. The series was produced by Warner Bros. Television, Silver Pictures Television and Rob Thomas Productions, and Joel Silver and Thomas served as the executive producers.

"My Mother, the Fiend" is the ninth episode of the second season of the American mystery television series Veronica Mars and the thirty-first episode overall. Directed by Nick Marck, the episode was co-written by Phil Klemmer and Dayna Lynne North. It was first aired on November 30, 2005, on UPN.