John Fitzpatrick is a common name and may refer to various individuals across different fields. One notable John Fitzpatrick is an American politician who served in the Illinois State Senate. He has been involved in local governance and community initiatives, focusing on issues such as education and public safety. Another prominent John Fitzpatrick is a renowned astronomer known for his research in the field of astrophysics. He has contributed to several studies on celestial bodies and has published numerous papers in scientific journals, enhancing our understanding of the universe.