Colleen McMahon at a glance
- Current role
- Senior Judge
- Jurisdiction
- New York · Federal
- Judicial service
- Active
Senior Judge · U.S. District Court for the Southern District of New York
Official judge-specific and circuitwide procedural guidance has been located for this profile.
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Born 1951 · Columbus, OH
Judge McMahon's courtroom provides basic presentation equipment; other technology must be supplied and operated by the party, with electronic devices requiring a specific court order for courthouse entry.
The courtroom is equipped with outlets, microphones, an easel, and a screen. If you require any other technology, you must provide it yourself. You must also be able to operate it yourself. The court does not permit cellular telephones, tablets, laptops, or other electronic devices into the courthouse without a court order specifically identifying the permitted device.Judge McMahon's Individual Rules ↗
In federal district-court civil proceedings, testimony is ordinarily taken in open court; remote contemporaneous testimony requires good cause in compelling circumstances and appropriate safeguards.
For good cause in compelling circumstances and with appropriate safeguards, the court may permit testimony in open court by contemporaneous transmission from a different location.Federal Rule of Civil Procedure 43(a), Testimony in Open Court ↗
Federal district courts may not permit courtroom photography or broadcasting during criminal judicial proceedings unless a statute or another federal rule provides an exception.
Except as otherwise provided by a statute or these rules, the court must not permit the taking of photographs in the courtroom during judicial proceedings or the broadcasting of judicial proceedings from the courtroom.Federal Rule of Criminal Procedure 53, Courtroom Photographing and Broadcasting Prohibited ↗
Identity source · HTML · checked July 25, 2026
View Federal Judicial Center biography ↗Identity source · HTML · checked August 2, 2026
View CourtListener judicial biographical directory ↗Judge Specific source · PDF · checked July 26, 2026
View Judge McMahon's Individual Rules ↗Courtwide source · HTML · checked July 26, 2026
View Federal Rule of Civil Procedure 43(a), Testimony in Open Court ↗Courtwide source · HTML · checked July 26, 2026
View Federal Rule of Criminal Procedure 53, Courtroom Photographing and Broadcasting Prohibited ↗