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Ruth Cooper is Sheldon's deceased aunt. She is mentioned in "The Engagement Reaction".

According to Sheldon, Ruth died in a hospital when she went in to visit Sheldon's Uncle Roger, caught something and died a week later. The two of them now share a coffee can on Sheldon's mother's mantel.

She is also mentioned in the Young Sheldon episode "A Proposal and a Popsicle Stick Cross" where it's revealed that she is George Sr.'s sister.


  • In Young Sheldon, it's mentioned that she has a beard, though George denies this.
  • It is unknown if she attended her brother's funeral.