AO 91

Criminal Complaint

Agency
U.S. Courts
Revision
Rev. 11/11
Fillable fields
21
Pages
1
Official source
U.S. Courts form page
Checked
October 20, 2026
Fill AO 91 online
Page 1 of form AO 91

AO 91: Criminal Complaint

AO 91, Criminal Complaint, is a United States District Court form from the U.S. Courts. The U.S. Courts page lists it under Law Enforcement, Grand Jury, and Prosecution Forms, effective on November 1, 2011, and the PDF prints the edition AO 91 (Rev. 11/11).

In this one-page form, the complainant states that what follows is true to the best of their knowledge and belief: the dates, county and district of the alleged violation, the code sections and offense descriptions, and the facts the complaint is based on. The complainant signs, and a judge signs below the line Sworn to before me and signed in my presence. The case is titled United States of America v. the defendant or defendants. The form itself does not say who the complainant is.

This page explains the form in plain words and is not legal advice. You can fill it out free in your browser on this page and download the result without an account.

Top of page 1 of AO 91: Criminal Complaint, as printed by COURTS

What's on AO 91

Caption

The United States District Court and district, United States of America v. the defendant(s), and a case number.

Complainant's statement

The complainant states that the following is true to the best of their knowledge and belief.

Dates and place

On or about the date(s), the county and the district in which the form says the defendant(s) violated the law.

Code Section and Offense Description

A two-column table listing each code section and a description of the offense.

Facts

Space for the facts the complaint is based on, with a box to check when they are continued on the attached sheet.

Signatures

The complainant's signature and printed name and title, then Sworn to before me and signed in my presence, with the date, city and state, and the judge's signature and printed name and title.

How AO 91 is filled out

  1. 1

    Caption

    The district, the name of each defendant and the case number are entered at the top.

  2. 2

    Dates, county and district

    The date or dates, the county and the district are filled in on the line that begins On or about the date(s) of.

  3. 3

    Code sections and offenses

    Each code section goes in the left column and its offense description in the right column.

  4. 4

    Facts and attached sheet

    The facts the complaint is based on are written in the space provided. If they continue, the Continued on the attached sheet box is checked and a sheet is attached.

  5. 5

    Sworn and signed before the judge

    The complainant signs with a printed name and title. The form says the complaint is sworn to before the judge and signed in the judge's presence, and the judge then dates and signs it.

Why fill Form AO 91 on indox

You get the real form, filled in a browser tab, with nothing standing between you and the finished PDF.

  • Fill the form right in your browser, no software to install
  • Free to fill and free to download, with no account
  • The official blank straight from the U.S. Courts, not a copy someone retyped
  • Works on a phone, tablet or computer

Court, oath and formats

Court

The complaint is captioned for a United States District Court, with the district named at the top, in a case titled United States of America v. the defendant(s).

Oath

The form says the complaint is sworn to before a judge and signed in the judge's presence. The judge's block has the date, city and state, signature, and printed name and title.

Fees

The form does not print a fee.

Formats

The U.S. Courts page offers AO 91 as a PDF (253.70 KB). The PDF has Print, Save As, Attach and Reset buttons.

Related forms

Who uses AO 91?

  • The complainant

    The complainant states that the following is true to the best of their knowledge and belief, and signs with a printed name and title.

  • The judge

    The form says the complaint is sworn to before the judge and signed in the judge's presence. The judge adds the date, the city and state, a signature, and a printed name and title.

  • The defendant or defendants

    The caption reads United States of America v. the defendant(s), and the form says the defendant(s) violated the code sections listed.

  • Category on the U.S. Courts page

    The U.S. Courts page lists AO 91 under Law Enforcement, Grand Jury, and Prosecution Forms. The form itself does not name who the complainant is.

The form names who states the facts, who swears the complaint and who it is against.

Official sources and the blank

Do it all with indox

View all 94 tools

Questions about Form AO 91

Who signs AO 91?

The complainant signs with a printed name and title, and a judge signs below the line Sworn to before me and signed in my presence, with the date and the city and state.

Who files AO 91?

The form does not name who the complainant is. The U.S. Courts page lists it under Law Enforcement, Grand Jury, and Prosecution Forms, and the form says the complaint is sworn to before a judge.

What goes in the Code Section and Offense Description columns?

The form says the defendant(s) violated the provisions listed. Each code section goes in the left column and a description of the offense in the right column.

What if the facts do not fit on the page?

The form has a box marked Continued on the attached sheet, which is checked when the facts continue on a separate sheet.

Does AO 91 print a fee?

No. The form does not print a fee.

Is this page legal advice?

No. This page explains the form in plain words and is not legal advice. It does not say whether a complaint is warranted in any case.