| Ronald A. Guzman | |
| Office: | Senior Judge of the United States District Court for the Northern District of Illinois |
| Term Start: | November 16, 2014 |
| Office1: | Judge of the United States District Court for the Northern District of Illinois |
| Term Start1: | November 15, 1999 |
| Term End1: | November 16, 2014 |
| Appointer1: | Bill Clinton |
| Predecessor1: | Brian Barnett Duff |
| Successor1: | Jorge L. Alonso |
| Office2: | Magistrate Judge of the United States District Court for the Northern District of Illinois |
| Term Start2: | 1990 |
| Term End2: | 1999 |
| Birth Place: | Rio Piedras, Puerto Rico |
| Education: | Lehigh University (BA) New York University Law School (JD) |
Ronald Amaury Guzman[1] (born November 18, 1948) is a senior United States district judge of the United States District Court for the Northern District of Illinois.
Born in Rio Piedras, Puerto Rico, Guzman received a Bachelor of Arts degree from Lehigh University in 1970 and a Juris Doctor from New York University Law School in 1973. He was in private practice from 1973 to 1974, and was an assistant states attorney of Cook County, Illinois from 1975 to 1980. He was a staff attorney (part-time), for the Association House of Chicago from 1980 to 1984, returning to private practice in Chicago, Illinois from 1980 to 1990. He served as a United States magistrate judge for the United States District Court for the Northern District of Illinois from 1990 to 1999.
On August 5, 1999, Guzman was nominated by President Bill Clinton to a seat on the United States District Court for the Northern District of Illinois vacated by Brian Barnett Duff. Guzman was confirmed by the United States Senate on November 10, 1999, and received his commission on November 15, 1999. He assumed senior status on November 16, 2014.