People with the last name Castonia in Wisconsin
- Aaron Castonia
- Audra Castonia
- Christopher Castonia
- Clarence Castonia
- Constance Castonia
- Cynthia Castonia
- Darlene Castonia
- Dave Castonia
- David Castonia
- Donald Castonia
- Dorothy Castonia
- Evan Castonia
- James Castonia
- Jennie Castonia
- Kaylin Castonia
- Leon Castonia
- Linda Castonia
- Mark Castonia
- Mary Castonia
- Melissa Castonia
- Meryle Castonia
- Rachel Castonia
- Rebecca Castonia
- Robert Castonia
- Ryan Castonia
- Sarah Castonia
- Sherry Castonia
- Tammy Castonia
- Terry Castonia
- Thomas Castonia
<1>