|Aliases:||Aunt Harriet Cooper|
|Location:||Wayne Manor, Gotham City|
|Relatives:||Bruce Wayne |
Dick Grayson 
|Status:||Deceased by virtue of time era|
|First:||"Hi Diddle Riddle"|
Harriet Cooper is a fictional character featured in the Batman multimedia franchise. She was a character created for the 1966 live-action Batman television series where she was played by actress Madge Blake.
Harriet Cooper, often referred to as just Aunt Harriet, was the whimsical doting aunt of millionaire playboy Bruce Wayne and operated in similar capacity to Bruce's youthful ward, Dick Grayson. Aunt Harriet lived at spacious Wayne Manor along with Bruce, Dick and the Wayne family butler, Alfred.
Aunt Harriet was unaware of the fact that Bruce and Dick were also secretly the caped crusaders known as Batman and Robin. She could never understand why Bruce was always taking Dick on so many "fishing trips" whenever something nefarious was taking place in Gotham City. She also never seemed to inquire as to why Bruce and Dick never returned from their "fishing trips" with any fish.