Kathy Smith(III)
- Actress
- Writer
- Producer

Kathy Smith was born on 11 December 1951 in Tucson, Arizona, USA. She is an actress and writer, known for TimeSaver: Cardio Fat Burner (1998), Aerobox Workout (1994) and Kickboxing Workout (1999). She has been married to Stephen Grace since 1987. They have two children. She was previously married to Stephen Grace.