|This article is about Carl's teacher. You may be looking for the baby with the same name, either in the comic or the TV series.|
|Occupation||3rd Grade Teacher (Pre-Apocalypse)|
|First Appearance||"When the Dead Come Knocking" (Mentioned)|
|Last Appearance||"When the Dead Come Knocking" (Mentioned)|
- "Remember my 3rd grade school teacher, Mrs. Mueller? Her first name was Judith, do you think that's a good name?"
- —Carl Grimes asking his father Rick if they can call his newborn sister Judith[src]
Almost nothing is known about Judith's life before or as the outbreak began other than that she was Carl Grimes's 3rd Grade teacher. She must have made a great impression on Carl, due to him naming his younger sister after her. Her current fate is unknown.
Judith was mentioned once in the TV Show by Carl to his father, Rick. As Rick was preparing to depart the prison, Carl wondered about what to name his younger sister. Rick indicated that Carl could decide the name. After thinking awhile, Carl brought up Judith Mueller, suggesting naming the baby after her. Rick believed that Judith would be a great name, and agreed.