The following is a list of families for which at least two people have appeared in a court record or a prosecutor's organizer.
- Amano - The family of Ernest Amano, who ran the Amano Group.
- Berry - The family that started and ran the Berry Big Circus until Russell Berry's death.
- Blackquill - A family consisting of prosecutor Simon Blackquill and Aura Blackquill.
- Cadaverini - A powerful mob family.
- Cykes - A family consisting of defense attorney Athena Cykes and psychologist Metis Cykes.
- Deauxnim - An alias used by Misty Fey and Larry Butz.
- DeLite - A family dedicated to helping thieves live honest lives.
- Devorae - A family closely tied to the Amano family.
- Dingling - A family consisting of two acrobat brothers, Acro and Bat.
- Edgeworth - The family of renowned defense attorney Gregory Edgeworth. His son Miles Edgeworth is the only known living member.
- Enigmar - The family of Zak Gramarye.
- Faraday - A family with ties to the Yatagarasu.
- Fey clan - An old matriarchal family of spirit mediums.
- Gavin - A family consisting of two lawyer brothers Kristoph Gavin and Klavier Gavin.
- Troupe Gramarye - A group of magicians consisting of the Gramarye family as well as students of Magnifi Gramarye.
- Hawthorne - A wealthy jeweler's family that was temporarily married into the Fey clan.
- The judge and his younger brother (family name unknown).
- Kitaki - A family of mobs turned business owners.
- Marshall - A family of two brothers formerly in law enforcement, Neil Marshall and Jake Marshall. The former was killed in the SL-9 Incident, and the latter was demoted due to his actions two years later.
- Miney - A family of two sisters, Ini Miney and Mimi Miney. The latter was a nurse at the Grey Surgical Clinic.
- Misham - A family of artists and former forgers.
- Payne - A family of two brothers, both of whom are prosecutors.
- Skye - A family of two sisters, Lana Skye and Ema Skye, who have been involved in law enforcement to some degree.
- Tenma - A family of which two members are known: Jinxie Tenma and Damian Tenma.
- Von Karma (family) - A family of prosecutors. Miles Edgeworth is an adopted member.
- Wright - A family consisting of Phoenix Wright and his adopted daughter Trucy Wright.
- Yew - A family consisting of Cece Yew. "Calisto Yew" claimed to be her sister.