People with the last name Chaddock in Illinois
- Adam Chaddock
- Andrew Chaddock
- Chrystal Chaddock
- David Chaddock
- Eileen Chaddock
- Ellen Chaddock
- Evelyn Chaddock
- James Chaddock
- Janie Chaddock
- Jasmina Chaddock
- Jennifer Chaddock
- Jessie Chaddock
- John Chaddock
- Katie Chaddock
- Kenneth Chaddock
- Laura Chaddock
- Margaret Chaddock
- Matthew Chaddock
- Millie Chaddock
- Nancy Chaddock
- Patricia Chaddock
- Phil Chaddock
- Philip Chaddock
- Ralph Chaddock
- Thomas Chaddock
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