Mom is, as her name suggests, the mother of Cow and Chicken. She is voiced by Candi Milo. Like her husband, only her waist and legs are shown. She wears a white dress with red polka-dots. She, also like her husband, appears to be insane. She is known to give her children strange and random advice. She tends to be sensitive as she is occasionally.
- She uses her feet as hands, just like Dad.
- Both Mom and Dad have split torsos. Whenever the camera pans out on the couple, only decapitated legs are shown.
- Despite having no mouth and by extension, a torso, Mom is somehow able to speak.
- It's a theory that Mom and Dad are actually sliced in half seen in Powerpuff Girls: Super Smash-Up!.