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AO 99

Appearance Bond of Witness

Federal · United States Courts · Effective December 1, 2011

This form is an agreement where a witness promises to appear in court and follow all court rules. It allows the court to set up different types of guarantees, such as a personal promise or a money deposit, to ensure the witness shows up.

Open the official PDFfrom United States Courts

Where this fits in a case

General & info

Information / general use — not tied to one step of a case

This form is used in a federal court setting when a witness needs to promise to appear for court proceedings.

Either party may file.

Common questions

What is this form for?
This form is an Appearance Bond of Witness, which is an agreement for a witness to promise to appear in court and follow all court orders.
What happens if the witness does not follow the agreement?
If the witness does not follow the agreement, the bond may be forfeited, and the court can order the money or security to be given to the United States.

Revision history

No changes recorded since we started tracking this form on October 9, 2026. The current version took effect December 1, 2011.

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