Judge Mathis is an American arbitration-based reality court show presided over by Judge Greg Mathis, a former judge of Michigan's 36th District Court and Black-interests motivational speaker/activist.

The series ran for 24 seasons from September 13, 1999, to May 25, 2023. The series ran in first-run syndication during its active years. The series saw Judge Greg Mathis adjudicating small claims disputes from his studio courtroom set. The series is NAACP Image Award winning, as well as the first court show featuring an African American jurist to win Daytime Emmy Award for Outstanding Legal/Courtroom Program.

The series was produced by Telepictures Productions and AND Syndicated Productions, while distributed by Warner Bros. Domestic Television Distribution. The courtroom series was filmed in front of a studio audience at the NBC Tower in Chicago, but included cases and litigants from other U.S. jurisdictions. As Divorce Court and The People's Court faced numerous judge-role casting changes, Mathis is the second longest reigning judge in television court show history, behind only Judy Sheindlin (Judge Judy and Judy Justice) by 3 years.

In February 2023, late into its final season, it was confirmed that the 24th season would be its last. Shortly after, Byron Allen's Allen Media Group had ordered a new series starring Mathis and his son Amir as bailiff. His subsequent court show is entitled Mathis Court with Judge Mathis, which began in syndication by September 11, 2023 on Justice Central.

Judge Mathis currently continues to air in reruns.