Articles containing information about trials, defined using the judge's announcement of the start and adjournment of proceedings. Most of these are named according to the date, but trial information is bundled up with articles about cases when a case involves only one trial.

Note that this category includes unofficial trials, such as the class trial and the witch trials, as long as they proceed in a similar manner to an official trial and the incident that the defendant is charged with causing is believed to be real at the time.

This category is a subcategory of Category:Universe. As such, all articles in this category are presented from an in-universe perspective, as if they were written from inside the Ace Attorney universe. Articles concerning unreleased games are exceptions to this rule.