People with the last name Castonguay in Wisconsin
- Amber Castonguay
- Barry Castonguay
- Carole Castonguay
- Debbie Castonguay
- Denise Castonguay
- Dennis Castonguay
- Donna Castonguay
- Jody Castonguay
- Joshua Castonguay
- Judy Castonguay
- Kelly Castonguay
- Lanie Castonguay
- Laurie Castonguay
- Lily Castonguay
- Luke Castonguay
- Lyssa Castonguay
- Mark Castonguay
- Meryl Castonguay
- Mike Castonguay
- Nancy Castonguay
- Neveu Susan Castonguay
- Nicole Castonguay
- Patrick Castonguay
- Raymond Castonguay
- Renee Castonguay
- Robert Castonguay
- Roland Castonguay
- Sadie Castonguay
- Stacy Castonguay
- Terry Castonguay
- Timothy Castonguay
- Travis Castonguay
- Vivian Castonguay
- William Castonguay
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