|Portrayed by:||Diana Pavlovská|
|Home:||White Pine Bay, Oregon|
|Significant Other/s:|| Christine Heldens (friend)|
George Heldens (friend)
Joanna was a guest at Christine Heldens' party. When Norma Bates arrived, she was introduced to Joanna and her other friends Lori, Cat and Kenny and stated that her husband had died in a car crash before engaging in conversation with them about the Grand Canyon.