Sylvia

Bob may refer to:

Doctor Who Universe

 * Sylvia Noble, Donna Noble's mother.
 * Sylvia Thaw, an assistant to Richard Lazarus.
 * Sylvia, the last surviving member of the human race in an alternate reality.
 * Sylvia Dillane, chairman of the North Sea Boating Club.

Real World

 * Sylvia Coleridge, who played Amelia Ducat in.