Joanne Whalley's personal life has been closely intertwined with her career. She married actor Val Kilmer in 1988, and the couple has one son, Mercedes de Kilmer. Despite their divorce in 1994, they have maintained a cordial relationship, especially for the sake of their child.
Outside of her acting career, Joanne is known for her love of art and literature. She often spends her free time exploring museums and galleries, which fuels her creativity and provides inspiration for her performances.