People with the last name Prokopiak in Illinois
- Agatha Prokopiak
- Amy Prokopiak
- April Prokopiak
- Barbara Prokopiak
- Bernard Prokopiak
- C Prokopiak
- Christine Prokopiak
- Christopher Prokopiak
- Diane Prokopiak
- E Prokopiak
- Lambert Prokopiak
- Lori Prokopiak
- Marian Prokopiak
- Michael Prokopiak
- N Prokopiak
- Patryk Prokopiak
- Peter Prokopiak
- Waclaw Prokopiak
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